Linux Data Recovery, Data Recovery Linux

Advanced Linux Data Recovery Software

2011-12-20T01:23:00.000-08:00

When any volume of your LINUX hard drive contains unnecessary data, which you do not want any more, you format it and store data afresh. Sometimes, due to operating system malfunction, file system corruption or any virus/malware infection, volumes get corrupted and cannot be accessed. In such cases, you need to format the troubled partitions/volumes, so that data can be stored and accessed normally. This is case, when you have to format the volume forcefully, which results in the loss of valuable data in the formatted partition. Apart from these, there are occasions, when you lose all your data because of any accidental formatting. In any such occasion, if you still want to recover your data back, you need to take the help of any Linux data recovery software.

The act of formatting is similar to deletion of data. In both these operations (Deletion and Formatting), the data from their location get removed and we fail to access them with any normal means. In case of deletion, the operating system simply removes the data from its source location, whereas in case of formatting, the data as well as the structure of the volume are removed by the OS. In both the cases, the operating system removes all entries of the deleted data and marks the memory location as free so that new data can be stored at the same location.

In this context, the interesting thing is that the operating system never completely erases the deleted or formatted data from the hard drive and even after such an operation, your seemingly lost data are very much present at their locations. If the lost or removed entries of the deleted/formatted data can be retrieved, then the data can be easily restored.

LINUX recovery software are developed with innovative techniques to find out the lost entries of files due to deletion or formatting of them. These utilities are efficient enough to read those lost entries and recover the files back. Moreover they are designed with completely read only approach and retrieve data in their original format, without any damage/modification neither to the data nor to the storage architecture of the drive.

Lost your Important Files in Linux?

2011-12-14T01:32:00.000-08:00

Researches say that out of the many different reasons of data deletion, the most common cause is human mistake. Sometimes, it happens accidentally, whereas some other time, it is intentional. You were deleting some unwanted copies of photos, when mistakenly deleted the only copy of a memorable photograph. Similarly, you just deleted a folder and only after the deletion, realized that there was one important financial document in that deleted folder, which you need badly. While working on your LINUX system, such instances are not so uncommon and users do encounter them quite often. But, don’t worry! Even after such critical cases of data loss, you can still recover your data by using any good Linux data recovery software.

There are various instances of data deletion, including accidental deletion, intentional deletion of data or sabotage, deletion by virus attack etc. In earlier time, it was believed that once you deleted a data from the system, the data goes for ever and it can never be retrieved. But, one interesting truth regarding this myth is that recovery of a deleted piece of data is quite possible.

So, the question is what happens to the data that you deleted and how it can be recovered back? When you deleted a file from your LINUX system, the operating system removed all its entries from the system hard drive and marked the memory, allocated to the deleted data as free. But, remember that LINUX does not erase or overwrite the deleted data, until you save new files onto the same disk. Hence, if by any technique you can find out the removed entries of the deleted data and read them, the data can be recovered.

The LINUX recovery software do exactly the same. These software are developed with highly advanced scanning algorithms. When you run the software, these scanning algorithms dig your hard drive/volume in all possible ways and read the lost/removed entries. By using those lost entries, the software recovers the deleted or formatted data back.

These Linux data recovery software are absolutely read-only in their operations and never alter the structure or format of the data in the drive. Moreover, the utilities are developed with such user friendly user interfaces that they can be used by professional programmers as well as non-technical home users.

How to Recover Data after Encountering Error – GRUB 17

2011-12-04T19:47:00.000-08:00

Error – GRUB 17: Recover data

The Grand Unified Bootloader or GRUB is a package from GNU that facilitates implementation of multi-boot operation. With GRUB, you can install more than one operating system on your LINUX based computer and have their benefits. GRUB also facilitates viewing various hard drive partitions, repartitioning, modifying partition settings etc. However, sometimes it flashes error messages indicating problems in the hard drive, following which all the data in the data become inaccessible. In such situations, you can execute any data recovery LINUX utility to recover the seemingly lost or inaccessible data back.

You tried to boot your LINUX system and the system became inaccessible after displaying a GRUB error message. The error message, you may have encountered can be read as -

“GRUB Error 17: Cannot mount selected partition”

There can be a number of possible reasons behind the occurrence of the above error message, such as:

Though the requested volume/partition exists, but GRUB fails to recognize the file system.
The boot device set in the file '/etc/fstab' is incorrect.

Note: '/etc/fstab' stores information regarding connected disks as well as their partitions and provides the same to the system, when any drive is mounted.

GRUB has tried to boot a partition with severe corruption or damage to the file system.

Solution:
The following work around may help you resolve the above issues:
If the file '/etc/fstab' has been found with incorrect boot partition, try to edit and provide the correct boot partition.
If the file system has been found to be damaged or corrupted, run the 'fsck' command-line utility to locate and fix the errors.

If both the above option fails to solve the problem, you need to format the drive and make fresh partitions. With partitioning, all your data in the drive gets lost and you have to restore them from an updated backup. In case, you do not have a valid backup, you can still retrieve the formatted data by running any LINUX data recovery software.

These linux data recovery software incorporates many advanced techniques to read the lost entries of the formatted files and successfully recover them back. These software are extremely read-only in nature and with interactive user interfaces, quite easy to use.

Discussing a particular case of Superblock corruption in Linux

2011-10-21T21:39:00.000-07:00

Linux offers you a multi-platform, secure environment suitable for the entire open enterprise and providing features to help you excel in every aspect of competition. It offers a centralized administration to help you manage and make the best possible use of the Linux technology. When it comes to security, Linux is the most widely-accepted operating system because of its top-of-the-line security features. Despite having a range of user-specific benefits, using Linux has a few drawbacks. The Linux file system is often subject to damage or corruption due to various reasons, such as virus infection, hardware malfunction, operating system bugs, etc. As a consequence, the valuable data present on the hard drive becomes inaccessible. To overcome this problem, you need to go for Linux recovery through a reliable third-party utility.

For instance, you may come across the following error while working using your Linux-based system:

“suse:/# chown -v ryan:ryan /mnt/hdc1
failed to change ownership of `/mnt/hdc1' to ryan:ryan
chown: changing ownership of `/mnt/hdc1': Operation not permitted
suse:/# chmod -v 777 /mnt/hdc1
mode of `/mnt/hdc1' changed to 0777 (rwxrwxrwx)
suse:/# ls -l /mnt/
total 16
drwxr-xr-x 4 root root 16384 1969-12-31 17:00 hdc1
suse:/#”

Causes:
One of the following reasons might be responsible for the above error:
Due to incorrect directory or file attributes, you are unable to change the permissions.
The root directory is damaged, making the disk structure unreadable.
The superblock in the underlying file system is corrupt.

Resolution:
You need to try the following steps to resolve the issue:

Use the below given command to edit your user ID from the terminal as follows:
sudo gedit /etc/fstab
In the 'options' section, provide the following values
umask= 0000
uid= your UID value
gid= your GID value
Now, save the file and exit.
Execute the following command from the terminal
'sudo umount -a'
Run the command 'sudo mount -a' from the terminal.

If the problem still persists, you should take help of a proficient data recovery Linux utility. These third-party tools carry out an in-depth scan of your hard drive to retrieve all lost, deleted, or inaccessible data without affecting its integrity and other important characteristics. They have a simple, interactive interface design to make recovery easy and facile for the end users. Moreover, they support all mainstream Linux distributions, including Red Hat, SUSE, Debian, Caldera, Mandrake, etc.

Explaining a case of kernel panic in Linux 4 system

2011-10-17T21:33:00.000-07:00

While trying to boot your Linux 4 system, you might have seen this on your screen:

“ext2fs partition type 0x83. ....ext3-fs: journal inode is deleted....
mount: error 22 mounting ext3 error 2 mounting name switchroot:
mountfailed:22 umount/initrd/dev failed:2 kernel panic - not syncing.”

This error indicates that somehow the beginning of the hard disk has become corrupt. The inode table contains some bad blocks that also include an ext3 journal file’s inode. Although, it is not certain but seems as if the root file system is non-recoverable. If you have a map, you can easily find out other copies of the inode table on the disk. In case the data is present on other file systems, use a disaster recovery boot media or an installation media to boot the system and try to recover data on those file systems by first mounting them and then moving data to another file system or tape.

Data is a valuable asset and if your data is really confidential or critical, you can take help of a reliable data recovery services provider. It is worthwhile to avail good data recovery services, but still they do not guarantee a complete recovery as the disk may have been seriously damaged or crashed.

Another best alternative is to run consistency checks and then try to reformat the drive and reinstall the operating system. Now, after configuring your system, you need to create a bootable CD and backup the entire system on a reliable media. You can now easily use the bootable disc to boot and then restore the system. You should always perform full system backups and that too frequently. This will ensure that you do not lose too much data or if the data is really important, have incremental backups and save them to a different device.

Kernel panic is a serious problem and may occur on any platform that you use.

Exploring the causes of Superblock corruption in Linux and the possible data loss

2011-10-07T03:03:00.000-07:00

A Linux file system consists of blocks.Some blocks store user data or files, while the other blocks storethe file system’s metadata. The blocks that contain metadata arecalled metadata structures. A superblock is the most fundamentalmetadata structure that includes information about the file system,such as file system type, size, status, information about other meta data structures, etc. This information is critical and sensitive.If a superblock gets damaged or corrupt, you may encounter seriousdata loss. To overcome this problem and recover all lost invaluabledata, you need to go for Linux recovery through a reliablethird-party utility.

Suppose you use a Linux-based PC. Whenyou attempt to mount your file system, you may receive the followingerror message on your screen:

“/dev/sda2:Input/output error
mount: /dev/sda2: can't read superblock”

Cause:

The above errorindicates that there is some corruption in the superblock. Thiscorruption may be caused due to several reasons, such as virusinfection, abnormal shutdown of the system, operating system bug,etc.

As aconsequence, all your valuable data present on the hard drive wouldbecome inaccessible. At this stage, you may use an updated backup torestore all the lost or inaccessible data. However, if the backup isunavailable, you should follow the below mentioned resolution steps.

Resolution:

Linux maintainsmultiple copies of superblock in the file system. In case if a damageoccurs to the primary superblock, you can use these backup copies torestore the corrupt superblock. To resolve the above problem, youneed to mount the partition using different superblock:

First determine the location of the alternate superblock using the command:

# dumpe2fs /dev/sda2 | grep superblock

You will get the output as shown below:

Primary superblock at 0, Group descriptors at 1-6

Backup superblock at 32768, Group descriptors at 32769-32774

Now, try repairing the file system using the backup copy of the superblock as follows:

#fsck -b 32768 /dev/sda2

Use ‘Mount’ to mount your file system:

#mount /dev/sda2 /mnt

If the problem still persists, youshould take help of a competent data recovery Linux tool.These third-party software help you safely recover every piece oflost, deleted, or inaccessible data from any Linux-based system. Theyprovide a rich and interactive interface that needs no technicalexpertise for its proper implementation. Moreover, they support Ext4,Ext3, Ext2, FAT32, FAT16, and FAT12 file systems.

How to fix file system corruption problem in linux when FSCK fails

2011-05-11T02:36:00.000-07:00

Although Linux machine is considered as one of the most crash resistant but some times it too suffers from crash due to various unavoidable reasons like file system corruption and hardware failures. File system corruption can be easily resolved by running 'fsck' command, FSCK or "file system check" is a tool to check the consistency of Linux file systems But what will happens if this utility itself fails as the case of extreme corruption . As a consequence, we may lose all the valuable data stored in your system. To overcome the problem, we need to look for some third party Linux data recovery tool to get back our critical data.

For instance, we may come across the following series of error messages after starting our Linux machine: First, we encounter “dev/hda2 contains a file system with errors-check forced” error

The system performs an automatic "File System Check" (fsck) and displays the following messages on your screen-

“unexpected inconsistency RUN fsck manually without -a or -p options”

“An automatic file system check of root file system failed. fsck should be performed in maintenance mode with root file system in read only”

“a manual fsck must be performed then system rebooted”

Now lets check the reason behind this error:-

We have to face such behavior because there is some corruption in our file system. The corruption could be due to various reasons, like

1) Virus infection

2) Operating system malfunction

3) Super-block or Inode damage

This will prevent us from accessing the data. An updated backup will help to retrieve all the lost or inaccessible data. However, if the backup is not available, we should follow the below steps to get back the data.

Run the 'fsck' command manually following the syntax as given below-

--'fsck [ -F fstype] [-V] [-yY] [-o options] special'

Here 'fstype' is the file system type and 'special' resembles the character device name of the file system.

If the problem still persists, you should take help of a third party linux recovery tool. These tools are made to recover all the lost data from a Linux-based machine in any case of severe corruption and data loss.

How to get Linux data Back after formatting Of Hard drive

2011-04-30T03:30:00.000-07:00

Linux as we know is entirely an Open source Operating system there are thousands of developers independently working on its improvement and hence it is the most frequently updated Operating system due to this the Linux OS system is considered as most Error free system, but the fact is that any machine can go wrong and even the Linux is not an exception.

Sometimes, we may come across the situation when we have to format Hard drive or the drive gets formatted accidentally In these kind of situations we have to take help of some Linux recovery software to get our formatted data back.

Now let us discuss the circumstance which forces us to format the drive or the data is deleted, at times it happens that our system gets corrupted and we are left with no other option than to format the drive, and hence that causes loss of our data. some more situation are given below:

1) Operating system malfunction

2) Formatted the volume to increase partition size

3) Corruption of the file system

4) Severe corruption of the drive due to virus or malware attack

5) Accidental formatting of Hard drive

All the above leads towards loss of critical data loss so it is generally advised to take a complete backup of your critical data before making any significant changes to your machine and if you have not taken any backup of your data we should always remember that data from a drive is never lost unless it is over written and if that is not the case than third party linux data recovery software must be used to get back your data, these software are quiet capable enough to get the lost data back through there highly efficient scanning Algorithm.

Linux file recovery software when critical data loss occurs

2011-04-25T22:13:00.000-07:00

Linux has gained enough popularity for its new and updated features. Usually, this operating system is considered as the most regularly upgraded application and hence, with Linux, many users feel that they are having the advantage of using the most recent technologies. Even some feel that Linux is free from virus attack and other data loss problems. However, it is the fact that the technology has nothing to do with data loss. Linux systems also undergo severe data loss situations, leaving the system drive completely inaccessible. Under such cases, you can take the help of any Linux data recovery software to retrieve your data back.

Data loss in Linux can be in any form, starting from the accidental/intentional deletion, formatting of the media, virus/malware attack, operating system malfunction, file system corruption or any other software/hardware contradiction etc.

Whatever, be the reason behind the failure of the Linux system, it is your valuable data in the media which suffers the most. Some data can be urgently required, some are the result of months of research work and some even can never be recreated. In such situations, loss of them caused severe business loss and mental trauma.

Among all the odds, if you have taken regular backups of your data, you always resides at the safe side and can restore the data from a recently taken valid backup. But, if you have not taken any recent backup, you are under serious trouble for sure.

But, among all these troubles of data loss, the good fact is that data from the troubled Linux drive never gets lost permanently. Therefore, if you can take strict measures to avoid overwriting the data in the drive, and run any efficient Linux file recovery utility, then, all you lost data can be easily recovered back.

These undelete Linux applications can work on any Linux operating system based computer system and can recover your lost, deleted, formatted or inaccessible data effectively. These utilities have been developed with many advanced scanning algorithms to dig into the storage media throughly and are completely read-only in nature. Moreover, with detailed instructions at every step and highly graphical user interfaces, they are pretty easy to use even with much technical knowledge.

How to recover linux files after corruption

2011-02-27T20:28:00.000-08:00

Installed Applications and the operations performed by them are critical part of any OS These operations are critical from system point of view to access data from hard drive and run the software, both application and system software. Linux operating system manages all the system related operations through init. It is the most significant step of booting process. However, if it fails to run properly, system becomes unbootable and stored data become inaccessible. This behavior leads to data loss and put you in need of Linux file recovery solutions.

When you boot your Linux computer, init is the step of the process that is identified through process id 1. The init data structure has all controls sequences and processes when you shut down your Linux system. If you encounter errors while starting or shutting down the Linux system, it can be due to missing init file or initrd file corruption.

As a practical example of this problem with your Linux OS based computer, you may get the below error while booting the computer-

“Kernel panic: No init found. Try passing init= option to kernel”

As stated in the error message, Linux cannot find init file. The file may also be inaccessible due to corruption. At this point, data become inaccessible and Linux data recovery becomes very essential .

Root Cause:-
You may face this problem due to any of the below reasons-
The ‘root’ parameter of Linux Kernel statement is not pointing to a valid hard drive volume or hard drive.
Initrd file is damaged or corruption. The problem can also occur if the file has been deleted.
Initrd statement is not put at right place when GRUB requires it.

Steps to resolve
Follow the below given Linux recovery steps to recover lost data-
Make sure that initrd file is at correct position.
Change root parameter to the additional parameter that contains root directory of your Linux system.
Use Linux Rescue CD to restore damaged initrd and init files from it.
If the problem persists, format entire hard drive and reinstall operating system. Afterwards, restore data from backup.
If backup is not in place, then you need to perform data recovery Linux using third-party applications.

These linux file recovery tools are capable of methodically handling all data loss situations. They help you recover data in a safe and easy way.

Major Reasons for Data loss In Linux

2011-02-25T03:26:00.000-08:00

Linux although considered as a stable and secure Operating system may still have to face the situation when data loss could occur resulting the loss in some critical files

There are basically many reasons that could result in these situation they are explained here one by one generally its the crashing of hard drive that is the main culprit some reasons for this are

A) Damaged or missing files from Operating system.

B) Virus attack. yes despite being called as virus free OS it too suffers from Malware

C) Messages like "Unable to Mount Operating system".

D) Damanged Master Boot Record

E) Corruption is superblock

F) Errors Like "No Fixed Disk Present""DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER"

All the above Points affects linux based hard drive. Resulting data loss these sort of losses could be prevented with the Use of Third Party Data Recovery Linux softwares these softwares are quiet efficient to recover lost data.

How to recover ext4 files in Linux

2011-02-24T02:52:00.000-08:00

Ext4 stands for forth extension file system it is the newest file system in Linux and its generally considered as the more advanced version of ext3 file system .Until now Ext3 file system is the most popular file system because of its stability it is basically journaled file system. In spite of these great features ext3 have some limitations too to overcome the limitation Ext4 file system was developed . Ext4 file system provides improved performance as well as it has enhanced reliability, there are major changes incorporated in its data structures like the delayed allocation features, basically in delayed allocation new data is not written as soon as it is written the written process is delayed.

Although the delayed allocation feature have some advantages but this could also lead to data loss situation and in that situation the only Saviour with us is the recovery softwares. like the ext4 file recovery software from stellar data recovery

Lets explain the situation by taking a scenario we are using Ubuntu with file system Ext4 and while you are working on the machines the system shuts down suddenly now when we restarts the system the files on which we are working are no longer accessible we finds that the delayed allocation property of the ext4 file system has caused the data loss the problem is that it takes about a minute for the data to be written on the disk but our machine was abruptly shuts down

when the problem of this type occurs best solution is to refer third party Linux data recovery application to get your data back .

Fsck error and data loss in linux

2011-02-22T01:48:00.000-08:00

Linux is a widely known OS used in millions of computers today because it is virus free and quiet stable Open source operating system, it has various distributions to meet different kinds of needs. This advanced operating system supports a wide range of file systems, including Ext3. Ext3 is the most popular and widely used file system. It is used as a default file system numerous Linux versions. It provides a wide range of safety measures to prevent file system damage.

Ext3 is basically a journaled file system, it does not require file system checking when your Linux computer shuts down unexpectedly because of power failure, operating system crash, or any other reason. Ext3 file system also enables H-Tree indexing and online file growth for large directories. However, irrespective of various advanced security features, this file system may encounter corruption in some situations.

Wherever there is a corruption in Ext3 file system the following message is splashed

“fsck.ext3 Unable to resolve 'LABEL=boot”

This error message occurs when you boot your Linux based machine after initializing the hardware. The error may also occur if your Linux runs fsck command at boot time.

Grounds of the problem-
This behavior of Linux operating system occurs if any of the below conditions are true-
Boot partition of Linux system is damaged.
Hard drive is affected by bad sectors.
There is a wrong entry of the boot partition in the /etc/fstab file.
Ext3 file system is damaged.

Resolution-
Apply the following Linux data recovery solutions to sort out this problem-

A) In case of boot partition corruption, run fsck on the damaged volume. It detects and fixes file system and hard drive integrity issues.
B) Mark correct entry of boot partition in the list of volumes. For this purpose, you need to boot your system using Linux Rescue CD.
C) Replace the bad sector affected storage media with a new disk. However, you need to restore data from an updated backup after this process.

If all the above options are used and still the important files are in accesible then there is a need of third party Ext3 recovery tool. They let you perform Linux recovery in an easy and safe way with simple user interface and read-only conduct.

Linux data recovery software to prevent data loss

2011-02-14T02:14:00.000-08:00

Linux is an advanced operating system and over the years, it has given more ease of usage. Since its development, with every passing year, more and more users have opted for Linux. For it’s useful and quality features, many industries, entrepreneurs and individual users have shown faith on this comparatively new operating system.

As this is the most frequently updated operating system among its class, many users even consider Linux as absolutely flawless. However, as we all know, no application is completely free from problems and Linux also has its share as well. But, the good thing is that with Linux data recovery utilities, you have ample chance of recovering your data back after any occurrence of data loss or inaccessibility problem.

There can be a number of situations, in which you may lose your valuable data from your so called robust Linux system. Below mentioned are some of the mostly encountered ones:

Accidental or intentional deletion of data from the Linux system.
File system corruption.
Operating system malfunction.
Virus/malware infection.
Any application contradiction resulting in the crash or corruption of the Linux OS etc.

The list can be very long and the most threatening point of all these situations is the loss or inaccessibility of your valuable data from the Linux system. But, the good thing that may sooth your nerves a little is that after any occurrence of data loss, the data from the Linux drive does not get lost permanently. If the
lost data is not overwritten, you can always have a chance of recovering the data back from the troubled drive or volume.

Therefore, once, you encounter any data loss situation and if you do not have a valid backup of your data, ensure that there won’t be any activity on the troubled drive. Then, without any further experimentation, run any good Linux file recovery utility.

These undelete Linux applications have immense potential to dig into the troubled Linux hard drive or volume and locate the lost data. These utilities are completely read-only in their operations and do not make any modification to the original data or its format.

Linux data recovery post MBR corruption

2011-01-31T07:46:00.000-08:00

When you start your Linux machine, the very first thing that occurs is hardware initialization. After this, GRUB loads from Master Boot Record of hard drive based on the configuration.

You may see boot menu showing all operating system in the list from that you can start system or initialize Linux kernel. In case you do not observe such behavior, the problem can be related to MBR or GRUB. In such situations, you may need to format the disk and perform data recovery Linux.In a practical scenario, you may fail to boot your Linux based computer when you install the Windows OS on the same machine. This behavior makes all your precious data inaccessible from Linux disk.

Root Cause
This problem usually occurs if the MBR gets overwritten. It makes your Linux system unbootable. The problem may occur when you install Windows operating system on a disk that has Linux operating system already installed.

Resolution
Try the following recovery methods to fix this problem-
Boot your system using Linux Rescue CD or installation disk. Enter the disk and use the following command on boot prompt-
root=/dev/hdXX. Here 'hdXX' is boot partition of the disk.
Format the hard drive and reinstall the Linux operating system. This behavior removes all your significant data from the drive and thus requires Linux file recovery to be fixed.
Restore your valuable data from the most recent backup. It is the best Ext3 recovery method. However, you must have an updated backup to ensure absolute recovery.
Use Linux data recovery software. The Ext4 recovery applications are capable of fixing all data loss situations.

Linux data loss due to root directory corruption

2011-01-24T22:07:00.000-08:00

Linux is a new age OS made of various data structures. Among all other data structures and components of Linux machine, root directory is the most important one. It is the base of data storage method in Linux operating system. However, in some situations, the root directory may get damaged and data loss situations occur. At this point of time, you are required to opt for Linux recovery solutions.

More about root Directory
Root directory is initial point of Linux hard drive, from where operating system starts looking for files stored on hard drive. Every file and folder on Linux system has an entry in the root directory. Linux root directory is divided into various subdirectories, which are arranged in hierarchical format.

There are numerous reasons of root directory corruption in Linux operating system, such as virus infection, improper system shutdown, operating system malfunction, accidental deletion, and hardware crash. You may face strange behavior of Linux operating system and may encounter error messages similar to the following ones after root directory corruption-

“No such file or directory”
System becomes unbootable
System fails to create or delete files and folders

Resolution

In order to solve this problem and perform data recovery Linux, you need to attempt the below methods-

Scan your Linux hard disk using fsck command. Run this Linux command in the single-user mode, without mounting the file system. It is an inbuilt command of Linux Machine that scans the file system for defects and then attempt to fix them.

Format Linux hard drive and reinstall the operating system. Formatting is capable of fixing all the hard drive errors. However, it leads to severe data loss.
Restore your precious data from an updated backup. In order to ensure absolute Linux recovery, you must have a valid and current backup.
Perform data recovery using advanced Linux data recovery software.

Linux Data Recovery after Hard drive formatting

2011-01-17T21:32:00.000-08:00

Many Linux users take hard drive of the computer as a permanent storage And hence never bothers about taking backup of all their critical data. However, apart from strong firewalls, anti-virus software and other techniques through which data safety can be taken care of, no one can say that data stored in its system is fool proof.

Therefore, incidences like file system File corruption, malware infection or etc. can corrupt you machine any time its quiet often seen that the major cause of data loss is due to human error and that part we can not do much about it happens that we may some times knowingly or unknowingly format our hard drive Leaving us in the situation where all our critical data is lost Under all such tragic instances of data loss, Linux Drive recovery can help you recover your lost data back.

Data loss due to hard drive formatting is simply the most avoidable reasons and many of us are unaware of the fact that the data never gets permanently lost until that is being overwritten. Hence, with the help of any Formatted Linux data recovery software, you have an good chance of recovering all the formatted data from your Linux machine.

There can be a number of reasons/situations, which may Compel you to format your hard drive. Below mentioned ones are some of the prominent ones:

1) OS crash and inaccessibility leaves no other means except formatting and fresh installation etc.
2) Unable to solve the file system corruption.
3) Accidental formatting while rectifying problems with Linux system disk.
4) Formatting of the system while operating system up-gradation.
5) Deletion of necessary system files propelling to format and re-installation of OS.

After formatting, all your data gets erased from the drive and if you have taken any backup in the past, you can be able to restore the data from the valid backup. However, if there is no valid backup available or due to any unresolved reason, you failed to restore the data from the backup, you have to try running any data recovery Linux data recovery tool to recover your seemingly lost data back.

How to recover linux data after disk corruption

2011-01-13T03:37:00.000-08:00

In a practical instance of the Linux drive structure corruption in Fedora Linux OS, you may encounter the below error message when you reboot the Fedora operating system-based computer after it freezes at during boot up process-

"EXT-fs: dm-0: couldn't mount because of unsupported optional features (2000200)
mount error 22 - mounting ext 3"

Subsequent to the above error message, you might get further error message that says-

"kernel panic - not syncing: Attempting to kill init."

After this error message, Fedora OS cannot detect and access Linux hard disk volumes when you try to perform Linux disk recovery using Linux Rescue CD. When you try mounting the disk manually, it says that the disk has invalid arguments and thus it cannot be mounted.

Root cause of the problem

As mentioned above, this problem happens due to corruption to the logical structure of the Linux hard disk. It may also occur if drive data structures, like Superblock and file system, are damaged. Corruption might be the outcome of virus infection, OS malfunction, and other similar reasons.

Solution

Use any of the below Linux recovery solutions to sort out this problem-
Boot your Linux Machine using the Rescue CD and then run pvscan command for checking the logical volumes.
Run fsck -C -y /dev/hdXX command.

If none of the above file recovery methods work, you are required to format the disk and reinstall OS.

Although, formatting can fix all disk related problems, but it also cause serious data loss. In such situations, Linux File recovery software are required to recover lost data after formatting.

Linux File system Error and Recovery Option Available

2011-01-07T04:03:00.000-08:00

Like other computer OS, Linux also uses a number of data structures to perform various operations. These data structures include root directory. Superblock is one of the most significant data structures, which contains all the basic information, such as file system type, status (either mounted or un-mounted), and size. In some situations, this data structure may get damaged and Linux cannot access data from hard drive. It causes critical data loss situations and requires Linux file recovery to be fixed.

Linux file system manager accesses the Superblock information for maintaining it. All the parameters, like size, defined in the Superblock must match the actual parameters; otherwise you may face critical problems. For example, if the size of is different in Superblock as compared to actual size, then disk is reported as corrupt and you run across critical data loss problem and need to opt for Linux recovery solutions.

As a practical instance of this issue, you might get the below error message when you try to access data from a Linux OS based hard drive-

"The filesystem size (according to the superblock) is xxx

The physical size of the device is yyy."

The above error most frequently occurs when you try to repair Linux files using the fsck command. The above error suggests that the file system size is mismatching and the partition is damaged.

Cause

You may come across this behavior in Linux OS, if any of the below conditions are true-

An application or the system is attempting to write data on hard drive where Superblock is located. The problem occurs when Linux OS prevents the application from writing.

The hard drive volume is damaged.

The file system, partition table, or the Superblock is damaged.

To perform data recovery Linux in such cases, you need to resolve this issue as soon as possible.

Resolution

Try out the below Linux data recovery methods to work around this behavior-

Boot your system in the single-user mode.

Run unmount -a command to unmount disk volumes.

Try repairing the Linux volumes using fsck command.

Resize Linux volumes with the help of resize2fs command.

In case the above Ext2 recovery solutions fail to work, opt for Linux data recovery software to extract your precious data. Such Linux recovery applications perform absolute data recovery Linux using advanced scanning techniques. They offer safe and easy Ext3 recovery.

File System Corruption In Linux and Linux data recovery

2010-12-31T02:02:00.000-08:00

Linux is a popular open source UNIX-like OS that organizes all your files in a tree structure. All the files are rooted at ‘/’ or root directory. In order to attach any file system of other drive to file tree, you are required to mount the drive. You can mount Linux drive using mount command. However, in some cases, the mount command fails to mount the drive and makes it ready for use. It makes your significant data inaccessible and causes serious data loss situations.

You might fail to mount a Linux hard disk is the file system of the disk is corrupt. File system corruption may take place due to numerous reasons, ranging from virus infection to hard drive crash. In a practical scenario of this problem, you may encounter the below error message when you try to mount a Linux hard drive

The Mount Command:
“mount: you must specify the filesystem type”
The error occurs every time when you run the mount command. It makes the drive unusable and put you in need of Linux recovery.

Root Cause
You may run across this problem due to any of the following reasons-
Improper editing of the fstab file. Linux uses this file to list out the available hard drives and volumes. The mount command uses this file to determine required

Options.
The disk volume does not contain any file system.
The hard drive file system is damaged.
Superblock is faulty and cannot be accessed by the operating system.

Solution
Use any of the below options to perform data recovery Linux in such cases-Use -t parameter with the mount command. Properly specify all the hard drive entries in the fstab file. It enables mount command to see all the available devices and options. Re-create the file system using mkfs.ext3 /dev/hdXX command.
Use fsck command to fix file system consistency issues.

Linux data recovery after boot block corruption

2010-12-28T04:01:00.000-08:00

The Linux hard drive is partitioned in various partitions/volumes for effective management of your valuable data. Linux hard drive volumes start from the boot block where boot information of the operating system is stored. Last two byes of the Linux boot block contains boot block signature. In some cases, operating system cannot locate boot block signature and the disk cannot be accessed. It makes your significant data inaccessible and leads to data loss. Such cases require you to either restore data from backup or use Linux data recovery software to scan the drive and extract data from it.

For example, you might encounter an error message similar to the following one when you attempt to boot a Linux operating system based computer-

"Master boot record on /dev/hda has been updated.”
Subsequent to the above error, you may also encounter further error message that states-
“No boot signature found on partition”

The system cannot be booted in such cases and you face severe data loss situations. To recover your business-critical data in such cases, you are required to opt for Linux recovery tools.

Grounds of the issue

This problem most frequently occurs if you overwrite the LILO (Linux Loader) boot loader with the MBR (Master Boot Record) that was primarily installed on the /dev/hda disk volume. The boot loader might be overwritten if you try to install it using -M switch. Boot block corruption also results into the same problem.

How to fix boot block corruption problem?
In order to work around this problem, you have to overwrite the Master Boot Record with Linux Loader. It is possible with the help of /sbin/lilo Linux command. This command enables the operating system to overwrite MBR information on the /dev/hdX disk. Alternatively you can use LILO on the /dev/hda2 disk as:
boot=/dev/hda2
lilo -b /dev/hda2
lilo -M /dev/hda
lilo -A /dev/hda 2
In case the above method does not work, you will have to reinstall operating system. As reinstalling the operating system removes all the data from Linux partition, you will need data recovery Linux methods to get your precious data back.

Linux data recovery software employs highly-advanced Ext2 recovery algorithms to ensure absolute recovery. The advanced Ext3 recovery software are absolutely safe to use with read-only Linux recovery conduct.

How to recover linux file when boot error causes data loss

2010-12-22T20:39:00.000-08:00

In case of a Linux operating system based computer, sometimes, the system fails to boot following any unsystematic system shut down. The reason can be anything from a possible file system corruption to an operating system malfunction, but at the end of everything, it is your valuable data in the drive, that has been inaccessible and you need to run any Linux data recovery software to recover them back.

Boot errors are always critical, as once you encounter those errors, your system fails to boot further resulting in the complete inaccessibility of your precious data in the drive. In a Linux system, there are many types of boot errors which may put you in trouble, one of them may be read as below:

“Creating Root Device

mounting root filesystem

(scsi:0:0:0:0) CRC error during data-in phase

(scsi:0:0:0:0) CRC error in intermediate CRC packet

scsi: aborting command due to timeout: pid 0, scsi 0, channel 0, id 0, lun 0 read (10) ......”

Once, you encounter the above error, the booting process of your Linux system halts infinitely and all your data becomes inaccessible till you resolve the issue.

Causes:

From the above error message, many users mistakenly think that there is certain hardware related problem, however, following are some of the reasons that are actually responsible for the problem:

Possible corruption or missing of /boot directory from the Linux installation files.

Possible file system corruption.

Linux data recovery utility when partition table is corrupted in linux

2010-12-18T03:24:00.000-08:00

With technological advancement, now you can install and use more than one operating system in a single computer. This type of configuration, which is known as dual-boot, offers you to enjoy the features of multiple OS. However, sometimes, while making dual boot systems with different Linux OS the meta data structure gets corrupted. This kind of corruption results in the loss or inaccessibility of your valuable data and the need for advanced Linux data recovery arises to recover the data back.

In order to configure your system as dual-boot with another flavor of Linux, you are trying to install Fedora Core and come around a threatening error message. The error can be read as below:

“The partition table on device is corrupted. To create new partitions it must be initialized, causing the loss of all data on this drive”
After encountering the above error, the system may boot without any visible problem. However, if you go to the System Tools → Hardware browser, you will find out that the usual green bar for the hard drive is no longer there. The system is not showing the hard drive volumes and if you run the utility 'fdisk' on the drive, you may get a long set of messages. The messages that you receive, can be stated as follows:

“Disk /dev/hdc: 100.0 GB, 100030242816 bytes
16 heads, 63 sectors/track, 193821 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Device Boot Start End Blocks Id System
Partition 1 does not end on cylinder boundary.
Partition 2 does not end on cylinder boundary.
Partition table entries are not in disk order”

Reasons for corruption

From the first error message as well as the the second one, it is almost sure that there is a possible corruption to the partition table of your system.

In Linux machines, partition table contains all the vital information about the hard drive partitions and these information are indeed extremely necessary for the operating system to access and manage the partitions. Therefore, if there occurs any problem to the partition table, data in the drive becomes completely inaccessible.

You can resolve the partition table corruption problems by formatting the hard disk and making a fresh installation of Linux. With formatting all your data from the drive will be erased and you need to restore them from a valid backup. However, if you do not have any valid backup, the only way to recover your valuable data back from the Linux hard drive is to run any efficient Linux Partition recovery software.

Data recovery Linux utility to recover your data in case of hard drive crash

2010-12-17T03:43:00.000-08:00

Most of the Linux OS are open source applications and are regularly modified in order to safe-guard the system against any new threat in the form of viruses, malwares or other technical drawbacks. An user can witness new changes and improvements in Linux almost every day. In spite of all the good things, still there are occasions, which lead to the loss or inaccessibility of valuable data from your Linux system. Among such instances of data loss, hard drive crash is one.

Hard drive of your system contains many important data of yours' and anything like a crash of it can be an obvious hue and cry. However, with the help of advanced Linux data recovery, all your seemingly lost data can be recovered back.

When the hard drive crashes, though the data in the hard drive exists, you are unable to access the same. Apart from any physical damage, there can be many other problems behind the crashing of your hard drive, such as corruption of the file system, virus/malware infection, accidental deletion of the system files, operating system malfunction, other application contradictions etc. In any of these situations you may come across the following symptoms, which may signal a possible hard drive crash:

Symptoms of Linux hard drive crash:

The system is not booting properly or taking a much longer boot time.
Unusual black screen at the start-up.
After booting up, the Linux system hangs infinitely.
Some files, folders or even the drives are not listed surprisingly.
The system fails to recognize the hard drive/volumes.
The system stops responding in the middle of many operations or restarts quite often.
Flashes error messages indicating the damage to the file system or the corruption of Superblock etc.

In all the above situations, your precious data in the Linux hard drive is under serious case of data loss. However, you may be happy to know that under any instance of data loss, data from the media is never lost permanently, until that is being overwritten. Hence, if you take proper measures to avoid your data being overwritten and use any efficient Data recovery Linux utility, then, all your data can be definitely recovered back.

These Linux recovery software are developed with powerful algorithms to locate the lost or inaccessible data from the troubled Linux hard drive and recover them back with ease. Moreover, with highly interactive user interfaces, these utilities are easy to use even without much technical knowledge.

Linux data recovery solution when IV convert cause data loss

2010-12-15T23:40:00.000-08:00

'Ivconvert' is an in-built utility in Linux OS, which is meant to convert the linear logical hard disk volume to an exact or mirror logical volume. However, the point of caution is that if you do not handle the process carefully, it can lead to the failure of your hard disk and data loss thereof. Under such a condition, you need to take the help of any Linux data recovery software to bring back your lost or inaccessible data.

A brief about 'Ivconvert':

'Ivconvert' is an in-built application of Linux OS and helps you convert your liner Linux OS based hard drive volume to a mirror logical volume, which can be used in case, you encounter any instance of data loss situation. You can also use this command-line utility to add or remove the disk logs from the newly created mirror devices. Below are some of the most common parameters to perform some specific tasks:

-R, --regionsize MirrorLogRegionSize- This option lets you divide the mirror disk into several regions of defined size in megabytes.

-m, --mirrors Mirrors- This is a more advanced option, which lets you specify the degree of the mirror disk, you want to create. Note that here, '-m 1' means the original Linux volume to be converted into a single copy of mirror logical volume with one linear volume.

--corelog- This is an option which instructs the utility to employ an in-memory log instead of a disk-based log.

-s, --snapshot- This option allows you to create the snapshot from an existing volume with the help of another volume having the same origin.

-Z, --zero y/n- This option defines the the zeroing of the first KB of information in the snapshot taken. However, if the volume is set as read-only, then the

snapshot can not be zeroed.

It is always safe to take the backup of all your important data before you try converting your Linux volume into a mirror one as if the process of conversion by 'Ivconvert' is stopped in the middle, it may lead to data loss/inaccessibility. However, if you have not taken any backup or you fail to restore data from the backup, you can use any Linux recovery software to bring back your seemingly lost data.

What to do when linux file system got corrupted

2010-12-14T03:27:00.000-08:00

The Linux operating system is supposed to be the most regularly updated operating system among its counterparts. Apart from this fact, for its advanced technology and features, a large number of users prefer Linux. But, in Linux, the user can not get everything preloaded just like Windows.

There is an unique command for each operation in Linux and from the long list of regularly used commands, the 'mount' command lets the operating system to learn about the file system and lists in the file system hierarchy of the computer, which lets us access the the particular drives. However, sometimes, the 'mount' command fails to work and the OS can not be able to learn the drives resulting in the inaccessibility of them. In such situations of data loss or inaccessibility, Linux data recovery can help you recover your valuable data back.

There can be a possible file system corruption, which has led this abrupt behavior of the Linux system following the failure of the 'mount' command. The 'fsck' is a built-in command-line utility in Linux operating system, which checks the consistency of the file system and repairs the same, if finds any error. After encountering the above situation, if you try to mount the drives using the 'fsck' command, you may encounter some more error messages. The error messages may be read as below:

"[/dev/mapper]fsck -a /dev/mapper/mpath0p1

fsck 1.35 (28-Feb-2004)

ext2fs_check_if_mount: Input/output error while determining whether /dev/mapper/mpath0p1 is mounted."

"fsck.ext2: Bad magic number in super-block while trying to open /dev/mapper/mpath0p1

/dev/mapper/mpath0p1:

The superblock could not be read or does not describe a correct ext2

file system. If the device is valid and it really contains an ext2

file system (and not swap or ufs or something else), then the superblock

is corrupt, and you might try running e2fsck with an alternate superblock:

e2fsck -b 8193 "

The above error messages clearly state that the file system has been corrupted. In order to resolve the issue, you need to boot the Linux system from the safe mode and run the 'fsck' command to repair the corruption. However, if the file system has been severely corrupted, 'fsck' simply exits without doing anything. In such a case, if you are an expert user, you can input the next super-block address or the size of the same to the 'fsck' command, which can help the utility to gather the information from the next super-block and do the job.

However, failing to the above resolution method, you need to opt for any Linux drive recovery software to bring back your precious data.

Linux Hard drive Crashed what to do now

2010-12-13T03:13:00.000-08:00

Are you annoyed by the crashing of your Linux machine regularly? The reason can be anything from virus infection, to accidental deletion of important system files and Linux hard drive crashes almost every time, you boot the system leaving all your valuable data inaccessible. However, you need not have to ponder on how to recover back your Lost critical data back, you just need to try any good Linux data recovery software .

You may encounter the below symptoms while encountering the crash of your Linux hard disk:

Your Linux system fails to boot-up.
You are receiving a blank or a dark screen when trying to boot your Linux system.
The system is exceptionally slow and is taking a much longer boot time.
You are frequently encountering the rebooting of your Linux system and hangs frequently.
Getting an error message, such as: "No Fixed Disk Present" or "DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER".
On start-up receiving error message, such as: "Operating system not found" or "Drive not formatted".

There can be a number of possible causes, for which you are encountering the above mentioned situations of data loss or inaccessibility from your Linux machine . To name a few, below are some serious and complex causes behind hard drive crash:

Corrupted or damaged MBR.
Deletion or missing of necessary system files.
Corruption to the superblock of the hard disk.
Corruption to the file system of the Linux hard disk.
Deadly boot sector virus or malware infection.

In all the above data loss situations, first of all, you can try repairing your operating system by running the operating system CD. However, if you do not get any positive result out of it, try the 'fsck' command-line utility, which is meant to locate any file system based errors and fix them.

In case, you are still unable to resolve the issue, you have to format the hard-drive and make a fresh installation of the operating system. As formatting will erase all the data from the Linux hard drive, you have to restore them from a valid backup. If backup is unavailable, you have to use any Linux drive recovery utility to bring the lost/formatted data.

How to deal with error of shared library

2010-11-30T20:28:00.000-08:00

While working in a Linux system, sometimes you fail to start applications or even face problems in accessing the files associated with some applications following error messages related to various library functions. Such issues occur due to the corruption, damage or deletion of library files, which are necessary for the applications to run. In order to resolve these issues, you need to replace the damaged library files with the good ones and may encounter data loss thereof. Such instances of data loss can only be dealt with any powerful Linux data recovery software.

The error message that you encountered, in case of a damaged library file can be read as below:
“Program name: error in loading shared libraries: lib xxx...so. X: cannot open shared object file: No such file or directory.”
Once, you encounter the above error, the corresponding application terminates or hangs in the middle and can not be run further.
The prime cause behind the above problem is the corruption or damage of the library files, which happens because of the operating system malfunction, virus/malware infection, unexpected system shut-down etc. However, sometimes, the above problem may have occurred due to the missing or corruption of the system files.

Resolution:

Try updating the system libraries, and check whether that solves the issues.
If with the above process, you can not be able to resolve the issue, you need to reinstall the operating system in order to replace the damaged or missing system files.

If you do have a single Linux partition, with the re-installation of the operating system all your data from the drive will be lost and you need to restore them from a valid backup, failing to which, you have to take the help of a Data recovery utility to recover back your formatted Linux data.

Linux drive Recovery applications are safe, reliable and powerful utilities to find out all your lost, deleted or formatted data from the Linux hard drive and restore them back. The recovery steps with these software can be understood by all as they come with detailed instructions for each step.

Linux Data Loss Caused by Block Group Descriptor

2010-11-29T03:08:00.000-08:00

Ext3 or the third extended file system is the most popular file system with many Linux distributions. Ext3 is a journaled file system and stores data by dividing the Linux hard drive into different blocks of bytes. Furthermore, the blocks are managed in block groups and all the information about each block group is defined in the Group Descriptor. Moreover, the information is indexed in the group descriptor table. In case, if the block group descriptors get damaged, the whole Linux system becomes inaccessible and you have to run any Linux data recovery software to recover the data back.

In the situations, when the group descriptor table has been corrupted, you may encounter error messages suggesting the same, following which the Linuxsystem fails to boot. The error message may read as below:

“EXT3-fs error: ext3_check_descriptors / group descriptors corrupted”
When you boot your Linux system, the operating system fetches the information from the Group Descriptor Table and thereby you manage to access the data from various system locations. Hence, when the Group Descriptor gets damaged, the operating system even fails to start-up, as the entire file system becomes unavailable.

The reason behind the corruption can be anything including a virus/malware attack, application malfunctioning or a sudden system shut-down etc. Whatever be the reason behind, it is your important data that has been inaccessible and techniques like Linux data recovery can help you recover them back.
In order to resolve the above issue, try using the command-line utility 'fsck', which can check the file system for possible file system corruptions and repair the same. Sometimes, if the damage/corruption to the file system is severe, 'fsck' fails to repair and terminates without doing anything. As Linux duplicates the file descriptor table and stores at different locations of the hard drive, if you are an advance user, you can input the location or the size of alternate super-block to the 'fsck', which can eventually fetch the information from there.

In case, if you failed to resolve the issue with 'fsck', you are left with only choice to format the drive and make a fresh installation. After that, you can restore your data from a valid backup file. In case, backup of data is not available or you failed to restore data from the backup, you can still recover all your valuable data back by using any Linux data recovery utility.

Linux Errors and data recovery

2010-11-16T23:19:00.000-08:00

The Linux OS is compatible with vast range of tablet computers, mobiles, video game consoles, mainframes, super computers etc. Even, statistics says that as, server OS, Linux accounts more than 50% of the whole global installations. Also,over the years, Linux OS has gained fair amount of popularity among the common home users with the Fedora, Ubuntu and Open SUSE distributions. Moreover, with the advent of smart phones, notebooks etc, which are running on embedded Linux, the OS has been more closely used by many users. Though Linux has advanced technology and features, sometimes, some errors lead to data loss or inaccessibility and you need to look for any Linux data recovery software to recover back your valuable data.

In day to day usage of a Linux system, there can be enormous possibility of data loss situations, and you may not always successful in trouble shooting the system to gain access of your data. Hence, if you don't have a valid backup available or failed to restore the data from the backup, Linux recovery is the answer to bring back your data.

Common errors in Linux:

Grub Error 12 – Invalid device requested.

Grub Error 17 – Can not mount selected partition

Error – Mount wrong fs type, bad option, bad super block on /dev/hdb2.

Error – Too many mounted file systems.

File system error.

There can be many such errors leading to the loss or inaccessibility of your Linux data. In such cases, if you are a technical person, then you can trouble shoot at the low-level. You can run the 'fsck' command to detect and fix such error. Prior to running the 'fsck' command, first, you need to go to the single user mode. Then, you have to unmount the file system partition, you are going to work upon, if it is not the root file system. If you don't take enough care to unmount the file system, the 'fsck warns you, such as- 'The file system is mounted, do you want to continue anyway?' Saying yes to the message, may result in the loss of your data, because, at times, 'fsck' writes directly to the disk.

If you need to check the root file system based partition, you have to boot the system in single user mode and run the 'fsck' with a '-b' option so that it will run in a read-only mode. Also, the '-b' option directly go to the 'init' and makes an emergency booting while skipping the other start-up scripts.

Sometimes, 'fsck' fails to run or exits without running at all. At that time, you need to force run the utility with '-f' option. This is a case of severe corruption and you need to give additional information to 'fsck', such as the size of the alternate superblock or the address of the superblock to fetch the data and fix the error.

However, sometimes, these low-level recovery process is tedious as well as risky with respect to your valuable data. Hence, you can go for any Linux data recovery software, which can recover the data for you safely.

stellar Linux Partition recovery software

2010-11-11T22:27:00.000-08:00

Linux is basically a command based OS where, in this operating system there is a command for each function and users, who use Linux based systems are usually known as more technically sound person. But, however tech savvy one may be, there are thinks that are beyond any one control like the case of accidental deletion of data it is quiet common even in case of Linux machine. Moreover, sometimes while resizing partitions with various third-party tools, important existing Linux partition gets accidentally deleted causing a serious situation of data loss . In such a case of Linux partition deletion, the thing that is most required is the data recovery software for Linux to recover your lost partition .

Users quiet often makes multiple logical partitions to a single hard disk drive for the convenience of data storage. Moreover, Linux OS based computers are often with multiple partitions and each of the individual partition has a fixed size. It is quite common that the need of partition space changes and hence, the need to resize the partition arises. Though, there are several partition resizing tools for Linux systems available on line, there lies a number of potential risks of partition loss as well. Therefore, the whole process of partition resizing becomes more complex than it actually seems.

There can be a number of causes behind the loss or deletion of a partition, while partition resizing. Moreover, the user must gain enough knowledge before dealing with the partitions as they contain your valuable data. However, once, your Linux partition gets deleted, you can be able to restore it from your previous valid backup. In case, you do not have any good backup or due to any unresolved reason, failed to restore data from the backup, then, you have to take the help of an efficient Linux data recovery software to recover your lost partition back.

Linux partition recovery software are designed to recover all your lost, deleted, formatted or inaccessible Linux based partitions or volumes with ease. These utilities are powerful enough to scan the drive, locate your lost partitions and recover all the data from them. Moreover, with detailed instructions based graphical user interface, these utilities are simple in usage even for the users, who are not so proficient in terms of computer technology.

Linux Volumes are inaccessible due to I/O error what to do now?

2010-11-08T23:13:00.000-08:00

This is possible in Linux OS to install and run the system software on a single hard disk partition. Such type of configurations are easy to establish . But if you divide your Linux hard disk into multiple volumes/ Partitions, you can effectively manage your critical data and get several other benefits. But in some situations, you might encounter I/O errors while accessing logical hard drive volumes and they become inaccessible. This behavior of Linux system results into critical data loss situations and require Linux drive Recovery to be sorted out.

While this is true that Linux OS would work fine on the hard drive with only one large partition, but there are several benefits of dividing the hard drive into at least four volumes (home, root, swap and usr). The major benefits of partitioning the hard drive are as given below:

First, it helps you to reduce the time required for carry out file system checks (while booting the system and carrying out manual checkup), because these checks can be performed simultaneously. With several volumes, it is quite easy to perform checkup.

Second, with many volumes, you can mount one or more of the volumes in read only mode. For example, when you consider that everything in the /home directory would not be touched even by the root, you can mount home in read only mode.

Finally, the most important advantage that hard drive volumes provide is absolute data protection. If anything goes wrong with your OS and you've to format the primary volume and then reinstall the OS. All of the data stored in secondary volumes would remain safe.

Although, this is quite useful to create several hard drive volumes, but in some situations the volumes might become inaccessible and you may encounter error messages while opening them. As an example, while accessing Linux hard drive volume, you may come across below error which put you in need of Linux Recovery:

“[ 234.284559] Buffer I/O error on device f 60. Logical block 0
[ 272.376782] Buffer I/O error on device f 60. Logical block 0”

In all these cases, Linux Data Recovery Software helps you to recover lost data. These software perform Recovery of Linux system by thoroughly scanning affected hard drive using advanced scanning mechanisms.

Linux data recovery: Unable to Access Linux Volumes

2010-10-31T22:57:00.000-07:00

This is possible in Linux OS to install and run the system software on a single hard disk partition. Such type of configurations are easy to establish and use. But if you divide your Linux hard disk into multiple volumes, you can effectively manage your critical data and get several other benefits. But in some situations, you might encounter I/O errors while accessing logical hard drive volumes and they become inaccessible. This behavior of Linux machine results into loss of important data .

While this is true that Linux OS would work fine on the hard disk with only one large volume , but there are several benefits of dividing the hard disk into at least four volumes vis. home, root, swap and usr. The major benefits of partitioning the hard drive are as listed below:

First, it helps you to reduce the time period required to carry out file system checks , because these checks can be performed at the same time. With several partition, it is quite easy to perform checkup.

Second, with many volumes, you can mount one or more of the volumes in read only mode. For example, when you consider that everything in the /home directory would not be touched even by the root, you can mount home in read only mode.

Finally, the most important advantage that hard disk volumes provide is absolute data protection. If anything goes wrong with your Operating system and you've to format the primary volume and then reinstall OS. All of the data stored in secondary volumes would remain safe.

Although, this is quite useful to create several hard disk volumes, but in some situations the volumes might become inaccessible and you may encounter error messages while opening them. As an example, while accessing Linux hard disk volume, you may come across below error which put you in need of Linux data Recovery:

“[ 234.284559] Buffer I/O error on device f 60. Logical block 0

[ 272.376782] Buffer I/O error on device f 60. Logical block 0”

In these cases, Linux recovery Software helps you to recover lost data. These software perform Data Recovery of Linux by thoroughly scanning affected hard drive using advanced scanning mechanisms.

what to do when partitioning causes failure of FSCk

2010-10-26T03:59:00.000-07:00

Stellar Phoenix Linux Data recovery

Hard disk in a Linux machine can be divided into primary, logical, swap, or foreign partitions. These partitions are assigned a pre-defined space at the time of installation of the Linux OS. However, as the requirements of the user change with a passage of time, the users increase or decrease the size of these partitions accordingly. To do so, the users either opt for FDISK utility or any third party software.

While the process of re-partitioning allows the user to fulfill all partitioning requirements, it might also result into complete unmountability of the hard disk, if not performed systematically. In most of these situations, the user encounters an error message that does not allow him/her to access the data saved on any of the hard drive partitions. To overcome such error messages, the user needs to opt for an effective third-party Linux partition Recovery application, if s/he has not maintained any backup.

Consider a practical scenario to illustrate the above case. You have three primary partitions and one extended partition in your Linux based hard dsik. You use a third-party utility to delete the extended partition and allocate all the space to one of your primary partition. However, after you have done so and you reboot your system, you encounter the below error message:

“Loading console font lat9w-16.psfu -m trivial (K
fsck failed. Please repair manually and reboot. The root
file system is currently mounted read only. To remount it
read write do:
bash# mount -n -o remount,rw /
Attention: Only CONTROL-D will reboot the system in this
maintenance mode. shutdown or reboot will not work.
Give root password fol login:”

The above error message appears at the booting time and makes all the hard disk partitions inaccessible.

Cause of the error:

The above error message occurs when file system corrupts due to improper partitioning by third-party partitioning utility.

How to resolve:

To get past the above file system corruption error message and access the data, follow the below guidelines:

Run the FSCK command to repair the file system.

Reinstall the OS and restore the data saved from an updated backup. However, if in case no backup is available, then you will need to use a commercial Linux Partition Recovery software. Such Linux data Recovery software use advance scanning algorith to scan the deleted files data from all the partitions.

Linux partition Recovery software When damage occurs in Partition Table

2010-10-19T04:02:00.000-07:00

Stellar linux data recovery

Now a days dual boot option is available in virtually every PC this is also known as Multi-boot. this facility enables you to use features of different operating systems while working independently on them. Dual booting has lots of benfet but some time it may cause serious problems too you may even face serious data loss situations. At this point of time, it become essential to look out for Linux Recovery to get your important data back.

It may happen that the partition table gets corrupted causing loss of data the loss of partition table itself cause the loss of data stored in a particular drive

Partition table is the most important data structure of Linux OS that stores important information about hard disk partitions. This information is required by the OS to access hard disk partitions. In case of damage to the partition table, all of your critical data gets deleted and you need Linux partition Recovery to get your data back.

How to do linux recovery when the module cannot be located

2010-10-12T03:57:00.000-07:00

While working on a Linux based computer system, sometimes, at the start-up or during the shut down, the system suddenly starts behaving abnormally. In the due course, an error message gets flashed on the screen and the system hangs. As all your data lying with the hard drive of the troubled system remains inaccessible, you have to look for any Linux data recovery software to recover them back.

The system processes that are related to the booting process and the shut-down process have been terminated and the error message pops up on the screen leaving the system hanging at that point. The error message that gets flashed on the screen can be read as below:

"Can't Locate Module "

Cause:

The error is quite clear and it is due to the unavailability of modules to the files modprobe, insmod or rmmod. The result is that the required system files could not be accessed by the system and hence, failed to boot or shut down. There is a fare chance of possibility that the discussed system files are corrupted and the reason may be sudden or unsystematic shut down, virus attack, file system corruption etc.

Modprobe is a system file which looks in the module directory "/lib/modules/uname -r" and adds or removes the modules intelligently. Insmod is meant for taking modules from the standard input and inserts them in the Linux kernel. The problem occurs when insmod tries to link the modules inside the Linux kernel. Rmmod works to upload the modules that can be loaded from the running Linux kernel, with certain yardstick, such as currently, neither the modules are in use nor they are referred by any other.

Resolution:

In the above discussed problematic situation, in order to resolve the issue, you have to format the partition and install the operating system once again. Formatting will erase the data from the drive and you have to restore it from the previously taken backup. However, if some data is yet to be backed up, it is best suggested to use Linux module recovery software to recover back all your lost or inaccessible data as a whole without taking much risk.

Linux partition Recovery: Resizing Linux Partition caused data loss

2010-10-08T02:42:00.000-07:00

In Linux,there are various file systems, such as ext2, ext3, ext4 etc. File systems are used to store and manage files on the logical partitions of a drive. For the convenience of storage and easier access of data, we used to make different file system based partitions for different categories of data. We create partitions of varied sizes and sometimes we need to resize the partitions. Resizing the partitions manually, following the formatting of the old partition or through any third party tool, may result in serious data loss. Under such instances of data loss, you badly need any Linux partition recovery utility to recover them back.

Need to resize a particular partition is quite genuine. For example, suppose that the partitioned volume is big and with time, it has saved a large amount of data. As it is affecting the accessing speed, you may think to trim the unnecessary part, so that it may enhance the search or access efficiency. Another possible reason behind partition resizing is if the amount of a particular category of data is more than the specified partition can store.

Whatever be the reason, if your Main aim is to resize the partition, you can do so by increasing or decreasing the size of the partition. There are two methods, one is to delete the partition after formatting it and then repartition, giving the the size of the partition, you want. Secondly, you can use any third-party partition resizing and recovery tool that can facilitate dynamic resizing of the partition.

If you choose to the option to format and delete the old partition and resize it, then you should take backup of the important data from the drive, as formatting will wipe out all the data from it. Later, you can restore the data from the backup server.

It is safer to use any resizing utility, however, sometimes, the process of trimming some memory from one disk and adding it to another may also cause data loss.
Hence, it is always advised to take backup of your critical data prior to such resizing process. However, if you have not taken backup or due to any error, couldn't restore data from the backup, then the only possible way to recover your valuable data from the Linux partition is to run any Linux parttion recovery software.

File System Corruption and recovery options in linux

2010-10-06T20:04:00.000-07:00

File system check or fsck is a system utility that checks the consistency of the file system in Linux and all UNIX like OS. Once, the system detects any inconsistency in it, following any unsystematic system shut down, this tool runs automatically at the booting process. The fsck tool facilitates repairing of the file system as specified by the user or else, it can do the on its own automatically. However, sometimes, fsck also fails to fix certain errors and the data in your Linux disk become inaccessible thereafter. In such cases, you need to look for any Linux recovery utility to recover back your valuable data.

Usually, in case of an odd shut down of the Linux system following any power surge or power failure, the process of read or write is interrupted all of a sudden and hence, there happens a corruption to the directory block that stores the information about the data. The fsck locates such inconstancy with flashing error messages, following which the system even fails to boot-up. The error messages shown by fsck are as follows:

It seems to have fatal corruptions. Running with

--rebuild-tree is required.

*ev/sda1: clean 33/522240 files, 80815/1044193 blocks [fail]

* fsck failed. Please repair manually.

All the error messages point towards a single thing that there is a serious corruption to the file system and may be due to the same, the operating system is not able to access the boot sector of the computer.

Whatever be the data loss situation, it is important to recover the data from the drive first. Hence, once fsck fails to repair the corruption and the data remains inaccessible, the best option is to restore your data from the backup. However, if backup is not available or failed to restore the data from the backup server, try running any Linux FSCK error recovery software.

Linux file recovery software are designed to recover and restore the lost or inaccessible data from any Linux based drive irrespective of the data loss situation. These applications provide rich graphical user interface and stepwise instruction set, which facilitate a smooth recovery experience to the users.

Solution to disk label corruption in LINUX

2010-09-30T05:17:00.000-07:00

The LINUX operating system is very much similar to UNIX and has derived many basic design principles from it. Day by day, LINUX OS has improved upon its previous versions and indeed has incorporated a number of distinguishable features over other operating systems. In LINUX, disk drives are mounted through file system volume label and not the device path. This is a newer concept applied in LINIX in order to avoid the ambiguity in distinguishing after a disk has been removed and some other have been inserted with the same device path. However, if there is corruption to the volume label, the situation becomes more complex, keeping the data from the drive completely inaccessible and a LINUX data recovery utility is a must to recover the inaccessible data.

To be a bit more elaborative, suppose, your system disk is at /dev/sda2. The system may have mapped another disk as /dev/sda2 and hence, your fstab, where all entries of the mounted disks are there, will be messed up making your system start improperly. At times, such issues can cause huge loss of data.

These kinds of situation may fire the command fsck automatically to check the LINUX volumes each time the system boots-up. As fsck, checks for file system errors and tries to repair the same, it may take a significant amount of time. Any power surge or system crash during the process may cause serious system instability and data loss. This is an added problem that may further flash a warning message and further increase the chances that your LINUX volumes become inaccessible. The message may read as below:

“Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)”

The warning message tells that the disk label has been corrupted and that is why the data in the drive is inaccessible. If running Disk Utility or fsck command fails, you have to restore the data from the backup. However, if backup of your data is not available, run a reliable LINUX recovery software to recover the data.

LINUX data recovery software are designed with powerful scanning algorithms that can recover any deleted, formatted or inaccessible data with ease irrespective of the data loss situation.

How to do Linux data recovery Post FSCK error

2010-09-29T23:11:00.000-07:00

In a Linux system, any corruption or damage of the file system is dealt with running fsck utility. Though the utility repairs the corrupted file system, in some occasions, especially after an odd shut down, running fsck leads to more disastrous scenarios like data loss or inaccessibility of the hard disk. Sometimes, the situation is so worse that you have to recover the lost or inaccessible data from the valid backup or through any Linux data recovery software.

The Problem:

While working on a Linux OS, if there happens any file system corruption or damage, fsck utility is used to check for the error and fix it. However, at times, fsck fails and flashes error messages. The affected drive or volume remains inaccessible and the error messages, which keep flashing on the screen may be as below:

“CANNOT READ: DISK BLOCK block-number: I/O ERROR”

A brief about 'fsck': FSCK Error And Recovery

fsck is a system utility that comes with the Linux OS and is meant for checking, whether the file system is consistent or not. The utility can even repair the damaged or corrupted file system. Moreover, it interactively provides options to fix the damaged file system in a specified way or it automatically fixes specific problems without any user intervention. Usually, fsck is run by the system administrator, as the process of repairing by fsck can sometimes cause severe data loss and corruption.

Possible causes behind such problem:

The cause can be anything from a sudden power failure or electric power surge leading to an unsystematic system shut down.

Resolution:

The most possible way to successfully resolve the error is to format the Linux system and make a fresh installation of the operating system. However, it is the data in the drive related to the troubled file system that holds more value than simply solving the error. Hence, in order to recover the inaccessible data from the drive or the volume, you need to take the help of any Linux recovery software.

Linux data recovery software are advanced utilities, that are meant to recover back the corrupted, damaged, deleted or inaccessible data from any Linux based drive or volume. The software are developed with interactive GUI and are compatible with all most all currently available flavors of Linux OS.

Stellar Phoenix Linux data recovery

2010-09-29T21:49:00.000-07:00

Disk label Corruption in Linux ! Solution Is here

2010-09-29T04:58:00.000-07:00

The Linux operating system is very much similar to UNIX and has derived many basic design principles from it. Day by day, Linux OS has improved upon its previous versions and indeed has incorporated a number of distinguishable features over other operating systems. In Linux, disk drives are mounted through file system volume label and not the device path. This is a newer concept applied in Linux in order to avoid the ambiguity in distinguishing after a disk has been removed and some other have been inserted with the same device path. However, if there is corruption to the volume label, the situation becomes more complex, keeping the data from the drive completely inaccessible and a Linux data recovery utility is a must to recover the inaccessible data.

To be a bit more elaborative, suppose, your system disk is at /dev/sda2. The system may have mapped another disk as /dev/sda2 and hence, your fstab, where all entries of the mounted disks are there, will be messed up making your system start improperly. At times, such issues can cause huge loss of data.

These kinds of situation may fire the command fsck automatically to check the Linux volumes each time the system boots-up. As fsck, checks for file system errors and tries to repair the same, it may take a significant amount of time. Any power surge or system crash during the process may cause serious system instability and data loss. This is an added problem that may further flash a warning message and further increase the chances that your Linux volumes become inaccessible. The message may read as below:

“Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)”

The warning message tells that the disk label has been corrupted and that is why the data in the drive is inaccessible. If running Disk Utility or fsck command fails, you have to restore the data from the backup. However, if backup of your data is not available, run a reliable Linux recovery software to recover the data.

Linux data recovery software are designed with powerful scanning algorithms that can recover any deleted, formatted or inaccessible data with ease irrespective of the data loss situation.

Among many names, Stellar Phoenix Linux Data Recovery is tried and appreciated by many users. The application can successfully recover your lost, formatted or inaccessible data from FAT32,FAT16,FAT12,Ext3,Ext4,Ext2 file system based Linux volumes.

Linux data recovery to undelete your lost or deleted data

2010-09-26T22:37:00.000-07:00

Linux OS is popular for its robustness and advanced features. Like every other OS, Linux has its own style of naming different features and here, volume means the logical partition of the hard drive. A hard drive is divided into several logical volumes for a number of reasons such as multiple operating systems, keeping different categories separately etc. Though multiple hard disk volumes have many benefits, sometimes, the volumes get deleted, corrupted or inaccessible leading to the cases of huge personal as well as professional loss of data. Under such cases, you need to take the help of Linux file recovery to recover back your valuable data.

Different volumes are loaded with different file systems and in Linux these volumes are dealt by a LVM. Every day, as we deal with many different kinds of data under different hardware and/or software environment, it is impossible to completely avoid data loss situations. Following are the reasons that can trigger the loss or inaccessibility of the logical volume:

Virus attack or malware intrusion leading to corruption.
Accidental or intentional deletion of partition/volume.
Heavy power surge leading to file system corruption.
OS Corruption etc.

All the above situations lead to the loss or inaccessibility of your valuable Linux data. As, data loss is quite inevitable it is always advised to take regular backups and moreover, it is suggested to automate the backup process. But, it is not always possible to take backup of almost every piece of data and as, data loss events can accidentally happen at anytime, such data loss situations have always been a nightmare for many. However, the good thing is that any seemingly lost data can be recovered, until those are being overwritten by some other data. Above all, with the invention of technology like Linux file recovery, all your lost, deleted and even formatted Linux data can be recovered safely.

Linux recovery tools are quite handy are designed with rich graphical user interfaces. The incorporated powerful algorithm and stepwise instruction set make enable the novice users user to without much hardship.

Linux Data Recovery Software: to recover Linux data

2010-09-07T04:56:00.000-07:00

Data Recovery is the process to recover data from corrupted, damaged or deleted files from OS. As we know, the possibility of the robustness and losing data in Linux based machine is less as it is more secure from virus infection/attack. But as we know in this world nothing is invincible, sometimes by human errors or software malfunction, you are not able to access your saved data from the file of Linux OS.

This means that your data is corrupted or lost. Now, to recover the lost or damaged Linux data, Linux Recovery tools are used. The need of Linux Recovery utility arrives only in few cases like- when Linux Hard disk not showing files & folders, OS get corrupted, Hard disk is formatted mistakenly

To Recover Linux files and Data, data recovery software performs the scan operations of whole hard disk to find out the missing files and folders. After finding missing files, folders data recovery software rearranges them into hierarchal structure

These software’s are so User friendly that extra efforts or high end technical skills are not required to work on the software.

Software to recover Data loss in Linux Drive

2010-09-03T23:58:00.000-07:00

Among the tech geeks, Linux OS based computers are considered more robust and safe From Data threats, as the Linux versions are more often updated with technology changes. Moreover, their frequent upgradation, Helps them to stay comparatively free from virus/ malware intrusion. These are the few points backing the Linux systems against some of the usual problems and thereby loosing valuable data. However, hard drive of a Linux based system, the major physical component that stores the data, can go wrong to take down significant amount of data with it. Such situation demands techniques, such as Linux hard drive recovery to recover back your valuable data from the troubled or damaged drive.

Inside view of Linux hard drive:
A hard drive consists of several mechanical and electromechanical components, such as head, platter, motor, PCB etc. Be it a mechanical failure, electronic failure, firmware failure or any logical failure, if your hard disk fails due to any of the reasons, the data contained in it becomes inaccessible. In a number of occasions, the hard drive doesn't have any physical problem and due to some logical errors, such as virus/malware infection, formatting, file system corruption or operating system malfunction, the data in the drive remains in accessible .

How to keep hard drive Safe:
Never try to open your damaged linux drive under any instance of data loss. Furthermore, never try coping new files, fragmenting etc, as the data inside the disk may get overwritten and hence, will go beyond the scope of recovery. Moreover, remember that, the data in the drive is never permanently lost and it can be safely recovered by the help of Linux hard drive recovery technology.

Advanced OS like Linux have inbuilt commands that can detect and repair errors to make your hard disk into working condition. 'fsck' is such a command, which helps to scan the Linux drive for any possible corruption or damage and repair the same in order to recover the data. However, if the command fails, you have to restore your data from the updated backup, failing to which only one option is left to recover your invaluable data, that is to run a Linux data recovery software.

These Linux recovery software are well advanced in their mechanism to dig into your troubled Linux hard drive and recover your data irrespective of the hard disk type, make or model. Moreover, the operation is so simple that you needn't have to worry a little.

Write-back caching techniques In Linux and data loss.

2010-09-01T04:42:00.000-07:00

In digital world, every single day, we can witness a new technological advancement, even over the advanced of the things. The 'caching' technique is one of the instances that has been devised to increase the efficiency and speed of the system. Through caching, data can be temporarily stored in the virtual memory before it is being written to the disk and can be accessed much faster. Sometimes, in Linux machine, caching causes severe corruption to the file system and your data in the affected drive becomes inaccessible. These instances of data loss can be countered and the recovery of your valuable data is required.

The problem:
While writing to a disk using the Write-back caching technique, the system shuts down followed by a power surge. The situation resulted in severe system error and some data in the drive went missing or inaccessible.

A brief about 'Caching':
In general, caching is a process of storing data that has been computed earlier or is frequently needed by the system. Furthermore, if certain process is triggering the same set of instructions for transferring data, then storing the data or the instructions in RAM can significantly increase the performance of the whole process. Data in the cache can be accessed much faster. There are several caching techniques based on the Write policy and Write-back caching is one of them.

In case of Write-back caching, data is not immediately mirrored to the storage device, the cache retains the data until it is fully read. The next step is to find the space for writing and cache marks the same as 'Dirty', then finally it writes the whole data from the buffer cache.

This techniques of caching has been implemented in a number of RAID controllers and is supported by most of the microprocessors. Problem is more prominent in case of non-journaled file systems, where information is directly written to the file system. If a write process has started, but not properly finished due to any improper shut down or hardware failure, the cache memory cannot be flushed to the specified location in the disk. Thus, the file system gets corrupted resulting the loss or inaccessibility of the corresponding meta data.

In these situations, the lost data can be recovered from the updated backup. Still some currently processed data can never be recovered as the file system corruption needs to be addressed with formatting and fresh partition. Moreover, if backup is not available, the situation becomes more worse and you don't have any other option except to look for Linux file recovery software to recover lost data .

Linux Data Recovery Software

2010-08-28T02:30:00.000-07:00

Data Recovery means to recover lost data from corrupted deleted or damaged OS. As it is well known fact that, the chances of losing data in Linux OS is very less. But sometimes human errors or software malfunction can cause data loss, and you fails to access your saved data from the file system of Linux operating systems. as your data get corrupted or lost. Now, to recover and restore the deleted or damaged data back, Linux Disk Recovery software is what is required.

To Recover Linux Data, data recovery software scan the whole hard drive and find out the missing files and folders. After finding lost data or folders or both the data recovery software rearrange them into hierarchical structure like the recovered files and folders can be easily searched out by the users. Extra efforts or technical skills are not required to work on the Stellar Phoenix Linux data recovery software. It is very user friendly. Now, the Linux data recover software with powerful algorithm and searching technique capable of recovering heavily damaged or deleted Linux files and folders.

Ext3 File system recovery From Linux partition

2010-08-16T05:02:00.000-07:00

In this e-age, we must have witnessed data loss every now and then. Though linux is not new to us, for its command mode and less user friendlier user interface, users are less comfortable at using it. Furthermore, if there happens any problem leading to data loss, the panic is beyond explanation. LINUX has some inbuilt commands for customizing the recovery of deleted files, still recovery from complex issues of data loss need more sophisticated utility like Linux partition recovery software.

Brief about ext3 file system:

Linux has many different file systems such as JFS, ReiserFS, XFS, ext2, ext3 etc. Here we are talking about ext3 file system and the recovery options once any file is deleted under this. ext3 or the third extended file system is an extended version of ext2 and is a journaled file system.

What happens when we delete a file in LINUX and recovery options:

When we delete any file, the block pointers corresponding to the file are marked unused in the block bitmap and marks the inode as "deleted", leaving the block pointers alone. In case of ext3 file systems, the block pointer is filled with ZERO and it seems impossible to recover. However, the information can be recovered from the journal file. That is, every time a file is accessed, the access time is changed and its inode is written to the disk along with some odd 31 other inodes in the same block. In this situation, a copy of that particular block is written into a journal and the block pointer carrying information about the deleted files can be recovered from that journal. Hence, by using any Linux data recovery utilities, we can recover deleted ext3 file, following recovering the information from the journal.

The most important thing to remember in case of Linux file recovery is that any write action should be avoided in the particular partition/volume, where a delete action has been performed. Furthermore, you should not install operations like 'fdisk', as it can overwrite the deleted data from the partition.

"no such device "error In linux - How to recover Linux data now?

2010-08-13T00:42:00.000-07:00

Even the Linux is still less used in comparison to Windows, it is known for its advanced and improved features. Almost everyday, you can witness a modification to improve your Linux version. With increased number of facilities, safe usage and better programming Linux is gaining popularity. However, with certain minor incompatibility issues with other leading applications of previous versions, resulting into data loss, may force you to think of something like Linux recovery.

Scenario:

You have an HP 6930p laptop with karmic 9.0 installed on a 250 GB Western Digital hard disk. Your system shows an error and does not boot further after recent update of the 'update manager'. The situation leads to data inaccessibility and need of a Linux recovery software arises. The error message that flashed on your screen may read as below:

"no such device: ba123456-7980-abcd-efghijklmnop

Failed to boot default entries

Press any key to continue "

Cause:

There is no stated reason for the above error so far. However, there lies certain problem with the UUID feature of the GRUB and this is one of the reflections. In a way, we can say that, there is some design related issues and the error comes in the form or the other, thereby.

Resolution:

In order to resolve the above error, follow the steps exactly the way it is:

1) Try to boot the system from karmic 9.10 CD

2) Press the key 'C' to enter the command line mode

3) Try to set 'sda1' as the 'root' and boot from it by writing at the command line as-

set root=(hd0,1)

linux /vmlinuz root=/dev/sda1 ro

initrd /initrd.img

boot

Once, able to boot into the system, open /etc/default/grub by-

sudo gedit /etc/default/grub

Then, disable the UUID function by -

GRUB_DISABLE_Linux_UUID=true

Lastly, update Grub2 by wringing -

sudo update-grub

Most likely, the above steps will solve the issues, however, if failed, then you have to restore your data from the updated backup. Furthermore, if backup is not available, then to recover the inaccessible data, you need to take the help of any Linux recovery software.

These Linux Recovery utilities are developed with powerful scanning methods that can locate and recover your inaccessible data. And the best thing about these Linux recovery software is that they don't need any technical expertise.

Disk corruption in LILO results in inaccessible Linux system

2010-08-12T00:12:00.000-07:00

When a Linux system starts up, the system is started with linux loader, which is a system file. After that the Basic Input/Output System section, after doing some tests, transfers the control to the Master Boot Record where the LILO is stored. One big plus of using it is that the booting process becomes real fast especially when stored in the MBR.

At times, the OS gets corrupt as it also involves modification in the MBR while booting, which may lead to inaccessible system. There are various workarounds to recover and restore your valuable data. If none of them is successful, then the best alternative is to use a third-party Linux Drive recovery software.

Let us take an example in which you start your Linux system but it fails to boot properly. The boot process displays 'LIL' on the screen.

Cause:
The reason behind this booting problem is that the descriptor table is damaged.
In a Linux system, the hard disk is parted into blocks and then into block groups. The information of these block groups is stored in a group block descriptor, which also acts as an index table for these tables.

Resolution:
In such situations, you can perform the following methods:

    1) Check the BIOS (Basic Input/Output System) and verify whether the disk parameters in the disk are correct or not.
    2) Try to format the partition again and install the LILO. However, that would mean that the data may get lost.
    3) Run the 'fsck' tool to mount the file system and to check and repair any corruption issues on the file system.
    4) If the 'fsck' command fails, then perform a complete format of the hard disk.

Now, if the Linux system is still showing corruption systems and you do not have updated backup of the data, then the best solution to recover inaccessible data is to use a professional Linux data recovery software. These Linux drive recovery tools perform non-destructive scanning algorithms to recover data in few easy steps.

Recover Lost Files From Ext2-Based Linux System

2010-08-10T05:15:00.000-07:00

Are you using a Linux system and are unable to locate some of your files after a power outage? If yes, then there are chances that you may have lost these files due to any random reason. There are few methods in Linux that you can use to recover these files. If these methods do not work, then the taking the services of a professional Linux data recovery tool is called for.

Taking a practical case in which you are working on a Linux system that has ext2 file system. Suddenly, there is a power outage and the system shuts down abruptly. When the power is restored, you switch on the system, only to find that you have lost some of the files.

Cause:

There could be the following reasons for such situation:

The system could be virus infected that could have caused the data loss.

There could be some bugs in the operating system version.

It could be possible that the logical drives may be accidentally deleted.

The partition table may have got corrupt or damaged.

Resolution:

There are few in-build tools that you can use to recover the lost files. But first of all, you should ensure that you unmount the file system from which the files have been lost. To recover the lost files, you can perform the following tools:

debugfs: This tool is very useful in bringing back the deleted files if it is already installed on your system. To do the recovery, you need to perform the following files:

Try the following command to invoke 'debugfs'

/sbin/debugfs device

where, 'device' is the file system

In the 'debugfs' prompt, enter the following command:

lsdel

The deleted files will be enlisted. From here, you can see the deleted files.

To write the data of the deleted file in a new file, enter the following command:

dump filename

Where, 'filename' is the name of the deleted file

Now, repeat this command to recover all the rest deleted files.

When done, type 'q' to exit 'debugfs' prompt.

E2undel: This tool is also used to recover deleted files, but it has better interface and provides more options while recovering the files. To recover the files, you have to provide the following command:

e2undel -d device -s path [-a] [-t]

Well, if even these tools are unable to recover the lost data then there is an urgent requirement to use a third-party ext2 recovery software to restore deleted files. With use of advanced scanning algorithms, these tools ensure that Linux recovery is safe and secure.

How to deal with MBR corruption in linux

2010-08-07T03:30:00.000-07:00

aster Boot Record is known as the partition sector, that is the first 512-byte boot sector of a partitioned hard disk. MBR holds the primary partition table of the hard disk and your Linux system boots only after the BIOS passes the execution of the machine code inside the Master Boot Record. Hence, any problem with the Master Boot Record directly affects the booting process of the hard disk, making it inaccessible and the situation demands Linux data recovery techniques to bring back your valuable data.

The MBR is not reside in partition of the hard disk, it is there in the main boot boot record, ahead of the first partition. If a hard disk has been partitioned with the Master Boot Record partition table scheme, the Master Boot Record contains the primary partition entries in its partition table that is all the information required by the OS to boot up. Where, the first sector stores this, the last end sector stores the information about the bootable partition.

In LINUX, the Master Boot Record can be accessed through the command 'dd'. This functionality usually helps in taking backup of your data, restoration of the data and erasing the partition table. Hence, the command is very much helpful and give you certain amount of control over these things. However, these processes may sometimes overwrite or corrupt the MBR and to recover your inaccessible data you wonder for a good Linux recovery software.

These cases are a sure possibility in case of the dual boot systems, however, due to human errors, viruses, power fluctuation or any hardware/software malfunction can lead to MBR corruption.

In case of a MBR damage or corruption, you have to take one of the following alternatives:

1) Replace the MBR with a Disk Editor.
2) Replace the MBR with the Recovery Console.

If the above measures fail, try to copy the MBR from another drive, however it seldom matches to the existing partition scheme of the original MBR.

If all the above measures fail to resolve the MBR corruption issue and you don't have backup of your data, then, Linux data recovery is the only available alternative. These Linux data recovery softwares are powerful enough to recover your data from the drive irrespective of the data loss situation and are dam easy to use.

Linux error and recovery "Partition Table unreadable "

2010-08-04T23:16:00.000-07:00

The partition is considered as a piece of logical division of the disk space, which runs on some operating system. Partition table is located at the first sector (cylinder 0, head 0 and sector 1, MBR) of each hard disk and It memorizes the information about sizes and locations of partitions. Hence, any corruption to the partition table, may lead to serious data loss or inaccessibility, demanding Linux recovery technology to get back your valuable data.

Scenario:

You started your Linux system and suddenly your system halted with an error message popping up. All your data in the hard drive becomes inaccessible and you are getting the same error message, every time you boot your PC. The situation has left you with no other option except something like Linux data recovery to get your data back. The error message flashing on your screen may read as follows:

“The partition table on device was unreadable”

Cause:
The primary cause behind the above mentioned error is that the partition table may be corrupt or damaged. Whereas, partition table gets corrupted due to any of the following reasons: unexpected shutdown, erroneous use of disk partitioning utilities, partition resizing, improper use of terminal commands etc.

Resolution:
In order to resolve the above error, check out the following steps:

Try to check whether at least one of the partitions has been marked as active or not. If not, then mark the partition as active, in which the operating system has been installed and you want to boot from it.
If booting from any other partition in your system or by any other means, you can get into the system, then, immediately backup all the important data.
If the above means don't satisfy the purpose of resolving the error,try to delete the existing partition using the 'fdisk' command or any other partition utility and recreate the partition.

Repartitioning the hard disk erases all the previously stored data and to restore the data you need the latest backup. The stress increases, if the backup is not available or due to any unsolvable reason, failed to restore the data. This is a kind of situation that badly requires any good Linux recovery software to retrieve and restore your data.

These Linux Partition Recovery utilities incorporate advanced scanning mechanisms that dig into your formatted hard drive and recover the data without any further damage. Moreover, these applications don't need any expertise and in fact with instructions for each step, these are quite easy to use.

How to repair corrupt superblock in ext2 file system

2010-07-29T05:22:00.000-07:00

In the Linux systems, the ext2 (short for second extended file system) file system is used extensively by numerous users. This file system is very efficient when dealing with real large disk partitions. In addition, when the ext2 file system is mounted then all the information that is stored in the disk data structures is copied into the RAM of the system.

Because of this, the Linux kernel is able to avoid numerous disk read operations. However, as nothing is perfect in this world the ext2 file system, too, is prone to corruption. In such cases, you should perform in-built methods to remove corruption and mount file system. However, in case you are unable to fix the problem then you should use a third-party Linux data recovery software to perform data recovery for Linux system.

Let us take an example. Consider a scenario wherein you have a Linux system having ext2-based file system. In this, when you try to mount the file system after a power outage you are unable to do so. An error message is displayed, that is:

“mount: wrong file system type, bad option, bad superblock, or too many mounted file systems”

Cause:
Such problems in mounting file system can occur due to corrupt ext2 file system especially the superblock.

Resolution:
To recover the problem of corrupt superblock, you should perform the following steps:

Search the superblock for the /dev/sda2 location.

Try to restore the file system using alternate superblock #xxx

Here, xxx is the location of the alternate superblock.

Now, try to mount the file system using the following command:

# mount /dev/sda2 /mnt

Try to mount the file system and check the files to see whether they are intact or not.

Such workarounds would be able to fix the superblock and you would be able to access the file system again. However, if the method does not succeed then you should use a third-party ext2 recovery software to recover the inaccessible data from the system. These Linux recovery tools have rich user interface that do not overwrite the existing file system while scanning the storage media. Also, the use of fast and sophisticated scanning algorithms ensures that the file system recovery is safe and secure.

Grub error and linux data recovery

2010-07-28T02:59:00.000-07:00

Grand Unified Bootloader is a boot loader package from GNU with the implementation of multi boot specification. This enables an user to install multiple OS in a single PC and choose the one, which is to be run when the computer starts.

GRUB facilitates a rich set of terminal commands that allow a user to view the hard drive partition details, alter partition settings, temporarily re-map the disk order, boot any user-defined configuration file and view the configuration of other boot loaders in GRUB supported file formats. Basically, GRUB errors indicate that the hard disk is suffering from errors and in those cases, if updated backup is not available, Linux file recovery software is the only safe option to get your valuable data back.

Taking a real life instance in account, while trying to boot, your Linux based machines gave an error and the data saved become inaccessible. The error may read as follows:

Error:
“GRUB Error 17 : Cannot mount selected partition”
Cause:
The above GRUB error message may occur due to following reasons:

If the partition, that has been requested, exists, but the file system type cannot be recognized by GRUB.
The mount point for the booting in the file /etc/fstab is pointing to an incorrect boot device. Note: '/etc/fstab' is the file that lists all the available disks, their partitions and conveys their initialization information when the mount command is used upon the devices.
Some of your Linux partition is suffering from file system corruption errors. However, GRUB has failed to recognize the error and started booting up that corrupted partition.

Solution:

If the file '/etc/fstab' that usually points to an incorrect boot partition, try to edit it as per the boot device.
Try to run 'fsck' command on your boot partition to fix the errors with your file system.
After trying the above measures, if the problem still persists, reformat the partition.

However, formatting will erase all the data from the partition and to restore the same, you need updated backup. If the backup is not available, or due to any reason, it failed to restore the data, Linux file recovery software is the only means that can recover and restore your valuable data into its original state.

These Linux recovery softwares are risk free with respect to data, as they don't further damage neither the data nor the storage media.

Understanding Linux OS and data loss in Linux

2010-07-26T00:38:00.000-07:00

Linux is a powerful and user friendly operating system. Initially it was intended to offer a free or low-cost operating system for personal computer users. The Linux operating system represents a unique reputation as a very fast processing and efficient operating system. Linux consists of all UNIX components and some additional features like GUI, TCP/IP, X Window System and Emcas editor.

Linux operating system is technically sound and advance, highly configurable and secure operating system. Although the Linux is very secure and reliable operating system, but we all consider that it is man made software. Error may occur in any of the system or application software and it may affected by viruses. And it may cause data loss.

There are many reasons and failures of data loss in Linux operating system. Some of the most common reasons are as follows: -

Server Corruption Errors

File overwrites

Disk Reformatting

Accidental Deletion

Virus attack

The above listed error can happen at any time without any reason; it may cause data loss and may create any serious problem. It is really very critical situation for any organization. But it is not impossible to repair, recover or restore these lost data. You may overcome these problems and recover your lost data with the help of Linux data recovery software available in the market.

There is an extensive collection of Linux data recovery software existing in the market. These varies according to the error occurred and the type of file system used by the operating system.

Ext2 is the popular Linux file system. If any corruption is occurred in this file system, then it may cause data loss. If data loss is occurred in Ext2 file system, then you may recover it by using Linux Ext2 Recovery software. With this software, you can scan all your crashed hard drive and can restore the required data.

How to mount Linux in case the superblock is corrupted

2010-07-23T03:27:00.000-07:00

In Linux system, memeory blocks are used to store all kinds of data. One of them is metadata. One of the most important metadata is superblock its main function is to keep all the details about the file system such asits block size. Hence, the superblock is one of the most components of the Linux system.However, it happens that your access to the superblock is blocked, resulting into disabling of mounting of the file system.

Consider a scenario when you fails to mount your ext3-based Linux system. the below message is displayed

"/dev/sda2: Input/output error
mount: /dev/sda2: fails to read superblock"

Reason:

The main reason behind this error is that the system files are damaged. Because of this, you fails to mount system files.

Solution:

To resolve this issue, you should restore the primary superblock from the updated backup copies.

The following procedures need to be followed in this case:

A) Locate the superblock for the /dev/sda2 location.

B) Repair the file system using alternate superblock #abc

where, abc is the location of the new superblock.

C) Mount the System file using the following mount command:

# mount /dev/sda2 /mnt

D) Finaly try to browse the file system and check if you are able to view all the files or not.

However, if you still fails to mount the file system then the only option available with you is to use a third-party Linux recovery software to recover the inaccessible data.

Linux data Recovery: when faced with error due to dual booting

2010-07-19T04:21:00.000-07:00

In dual booting two different OS are installed on a single hard dsiks, enabling us boot from either of the two OS the whole process of dual booting is done with the help of system loader it is a program which allows us to have dual booting of the system. Generally this procedure is done with the combination of Linux and Windows

The dual booting allows us to use functions and features of both of the OS on a single computer. Dual boot systems are normally used by programmers and testers.

Even though the whole process of dual booting is very important but sometimes this can cause several problems. A minor mistake here and there while making a dual boot system can lead to the serious issue.The common mistake is selecting “prepare hard drive” option which appears when you install Windows OS on a Linux system, in order to make it multi boot .

When this option is used, all the hard disk partitions and stored data gets deleted. After that new partitions are created and the OS is installed. When the installation completes,blank hard disk without any OS and data is whats remains. Everything, which was previously stored on the hard disk, will be deleted. In such situations, it is very important to recover all your precious data from the formatted hard disk to save you and your business.

What to do when superblock is corrupted in linux?

2010-07-16T04:47:00.000-07:00

Superblock is one of the common meta data structures,and its corruption may lead to inaccessibility of the hard drive and need of a good Linux data recovery tool arises to recover back your data. Linux recovery becomes even more essential when your hard drive becomes inaccessible and you fails to understand either the error message or the cause of it.

Superblock corruption is one of the many possible errors like intrusion of virus/malware,partition table corruption or file system corruption etc. In a LINUX hard disk, the partition is subdivided into multiple file system blocks. Most blocks store user data and some blocks store information of the file system itself or the meta data.

Scenario:
If you are trying to boot your PC, and encounter a serious error where the whole data stored in your hard drive becomes inaccessible. The error message being displayed may read as follows:

Error:
“The filesystem size is 12453462 blocks
The physical size of the device is 10093482 blocks
Either the superblock or the partition table is likely to be corrupt”

After receiving this error, when you manually try to run the command FSCK to resolve the above mentioned issue, you finds another message (error) which reads as follows:

“Error reading block 10125318
while doing inode scan. Ignore error?

   Error reading block 10125319
while doing inode scan. Ignore error?”

Cause:
The primary reason behind these error messages is either the corruption of the partition table or the corruption of superblock.

Resolution:
·     Unmount all the partitions using the command ‘unmount-a’ .
·     Choose the alternate superblock that is used to be with the operating system and mount the file system.
·     Try to repair the corrupted hard drive partitions using the command 'e2fsck' command.
·     If the above measure fails to repair the hard drive partition, try to recreate all the partitions.

Recreating the partition will erase all the previously saved data in the hard disk and to recover them back, you need a powerful Linux data recovery tool.

Linux File Recovery Using Ext2 file Recovery Software

2010-07-13T22:24:00.000-07:00

Unintentional deletion is one of the most common reasons of data loss as it is a very common user mistake. You may unintentionally remove some important files from Ext2 file system volume of Linux hard disk to free up the disk space and then realize their significance to your business. Most of the computer users think that the file is gone forever, once you deleted it. However, this is not the fact. The file is still there on your hard disk, but you can not access it because its file system entry is removed. In such cases, Linux file recovery proves to be a great help to get your precious files back.

In order to ensure successful recovery of lost or deleted files from Linux hard disk, first of all you should unmount file system. It minimizes the possibilities of overwriting the deleted file while trying to retrieve it. When you store a new file on the hard drive after deleting a file, operating system may overwrite the previously deleted file and make it impossible to recover the lost linux file.

If you are unable to unmount the Ext2 file system, because you have deleted the file from root file system, then you should shut down your system immediately. After that, remove the hard disk and attach the same to another Linux OS based computer. You should not install any software on the drive from which the file is deleted, particularly in case if the drive is almost full.

To handle such file loss situations and ensure perfect Ext2 file recovery, Linux OS provides you the following softwares:

1) debugfs- The tool is useful in recovering deleted files, particularly if you are unable to unmount the Ext2 file system volume. The syntax for the debugfs is- /sbin/debugfs device. It lists all the deleted files on Ext2 file system volume.

2) e2undel- It also works like debugfs, but features a simple and user-friendly GUI. The tool also provides some additional information to help you identify the deleted files.

In case the file is not recovered using the above methods, commercial Linux file recovery software come to your rescue. They thoroughly scan your Linux hard disk and extract all deleted, lost, missing, and inaccessible files from it. They perform quick, easy, and safe file recovery Linux and have an attractive user interface and a non-destructive behavior.

Linux Drive Recovery ::Volume Cannot Be Mounted Using Mount Command

2010-07-05T23:02:00.000-07:00

All the Linux data files that are accessible Are placed in root directory and denoted as ‘/’, in an organized form. These data files might be spread out over various devices. The mount command in Linux OS allows you to attach a file system on a data storage media to the root directory. However, if the file system is faulty and you run fsck utility to fix the problem after mounting the disk using this command, severe file system corruption occurs. It causes critical data loss situations and calls for Linux recovery.

The mount command tells the Linux kernel to attach the file system found on your hard disk volume in the /dir directory. The previous owner, mode, and contents of the directory become invisible after mounting, and as long as the file system stays mounted, the /dir pathname refers to the root of file system on hard disk volume.

The following three types of invocations of mount command don’t actually mount the volume:

A)) Mount -h- It prints the help message on screen.
B)) Mount -V- This invocation prints the version string.
C)) Mount [-l] [-t type]- The option lists all the mounted file systems that are of type “type” on your Linux hard disk. The -l option adds labels (like ext2, ext3) in the listing.

In current versions of Linux OS, it is possible to mark the mount and submounts as private, shared, unbindable, or slave. The shared mount gives you an option to create mirrors of the mount.
Mount is an essential process for accessing data from any Linux hard disk volume. If the drive is not mountable, it cannot be accessed. Sometimes, when you try to mount a Linux volume, you come across the following error message that puts you in need of Linux Volume recovery tool

“Wrong fs type, bad option, bad superblock on /dev/hda8, missing codepage or helper program, or other error. In some cases useful info is found in syslog – try dmesg | tail or so”
This problem is caused by dirty or corrupt file system. In such cases, you need to use Linux file Recovery software to get your important data back. The Linux recovery applications enable you to thoroughly scan the affected Linux hard disk using advanced scanning algorithms.

Ext2 file recovery from deleted files

2010-07-01T04:29:00.000-07:00

Linux is one of the most used open-sourced OS that has carved its own niche among its trusted users thats because It's fast, easy-to-use, and reliable. Also, it is part of the Linux, Apache, MySQL and PHP stack that provides a lot of advantages to the developers and its users but it has one drawback that it does not have a Recycle or trash Bin like Windows OS. So, after deletion of the file the recovery operations becomes difficulti. However, if you are unable to recover the deleted file then you should use a third-party data recovery toolto perform data recovery of linux systems.

Consider a scenario where you have an ext2-based Linux machine and you have accidentally deleted some files. Now, you want to recover the deleted files.

How to solve the issue:

To resolve this situation, you should perform data recovery of Linux system. And this can be done by following the below steps:

A) First of all, you should determine the partition from where the file was deleted. For this, you should use the "pwd" command in the shell console to know the working directory.

B) Now you have to unmount the current directory using the unmount command.

C) Now You should use the debugfs command.

D) Now use the isdel command.

E) Now use the dump filename command.

F) Finally restart the system. The recovered files will be at user defined location.

However, if you still are not able to recover the deleted files, then you should use a third-party Ext2 file recovery software to do the needful. Such Ext2 Recovery tools are read-only in nature and are able to perform Linux recovery using fast yet sophisticated scanning algorithms.

Recovering corrupted ext2-based file system from Linux

2010-06-25T00:05:00.000-07:00

The Linux system is an open sourced operating system that is much more secure than other operating systems. It provides the freedom to administer your system by taking care of the look & feel and the applications to be installed, etc. However, as nothing is perfect in this world, the Linux systems too can get corrupt or fail. These corruption scenarios can occur because of virus infections, abrupt system shutdown, damaged file systems, etc. You should take the help of in-built corrective methods to rectify the problem. However, if you are not able to restore the data, then you should use a third-party Linux data recovery software to recover data to the maximum possible extent.

Consider a scenario wherein you have a Linux 4 system. You switch on the system, but it fails to boot. An error message is displayed, that is:

“ext2fs partition type 0x83. .... ext3-fs: journal inode is deleted.... mount: error 22 mounting ext3 error 2 mounting name switchroot: mountfailed:22 umount/initrd/dev failed:2 kernal panic - not syncing”

Cause:

The root cause of this error message is the hard disk has crashed after the abrupt system shut down and, is now inaccessible. The reason behind this is that some bad blocks must have formed in the inode table, which is making the file system unrecoverable.

Resolution:

To resolve this problem, you should either of the following methods:

· Start the system from the disaster recovery boot media and run e2fsck on the damaged file system. This tool is used to check and repair the integrity of the file system.

· Try to mount the file system if it is on another file system and transfer the data to some other storage media such as memory cards, pen drive, etc.

The problem will be resolved using any of the mentioned methods. However, there are chances that you may still face the problem even after performing these methods. In such cases, you should use a third-party Ext2 data recovery software to recover the inaccessible data from Linux file system. Such tools are read-only in nature that do not overwrite the existing data while scanning the damaged area.

How to recover corrupted ext2 file

2010-06-19T01:56:00.000-07:00

Linux is an Open source OS and it is more secure than windows. It provides the freedom to monitor your system by controlling the look & feel and the applications to be installed, etc. However the Linux system too can get corrupt. These can be due to lot of reasons like virus infections, system shutdown, damaged file systems etc.
Consider a scenario wherein you have a Linux system. You switch on the system, but it fails to boot.

An error message is displayed, that is:

“ext2fs partition type 0x83. .... ext3-fs: inode journal is deleted.... mount: error 22 mounting ext2 error 2 mounting name switchroot: mountfailed:22 umount/initrd/dev failed:2 kernal panic - not syncing”

Cause:
The root of this error message is that the hard disk is crashed after the abrupt system shut down and it is now inaccessible. The reason behind this is that some bad blocks must have formed in the inode table, which renders the file system unrecoverable.

Resolution:

To resolve this problem, you should use the following methods:
· Start the system from the recovery boot media and run e2fsck on the damaged file system. This utility is used to check and repair the integrity of the file system.
· Try to mount the file system if it is on different file system and transfer the data to some other storage media such as external drive, pen drive, etc.

Either of the above method may be able to either rectify the file system or transfer the data to some safe location. However, if you are unable to do so then you should use a Linux recovery software to recover Linux file system. Such read-only tools are able to recover lost file/data .

Recover corrupted data from Superblock of Linux system

2010-06-16T04:24:00.000-07:00

Linux files are a collection of various folders, which are stored in a separate partition. The entire partition is divided into various file blocks, which are used for storing the user data. The metadata can be explained as the repository that contains the information of the file system "that is data about the data" is meta data. One such is the superblock, which is very important for the health of the Linux.

A file system cannot be mounted if fails to access the superblock. This issue arises if the superblock is corrupted it happens due to various reason like as malware infections, power outages, file system corruption and human errors. In such cases, appropriate corrective measures must be taken to recover the file. If you are not able to resolve the issue, then help of third-party Linux recovery tools to perform data recovery of Linux OS.

let us assume a case wherein you have an ext3-partitioned Linux system and you fails to access your partition. An error message is displayed, that is:

“/dev/sda2: Input/output error

mount: /dev/sda2: can’t read superblock”

The superblock has corrupted because of the above mentioned reasons.

Resolution:

You can recover the primary superblock from the various backup available that the Linux system maintains to deal with such situations. To do this, you need to perform the following few steps:

1) Find out superblock location for /dev/sda2

2) Repair the Linux files using alternate superblock # abc, where abc is the location of the alternate superblock.

3) Mount file system using mount command viz, # mount /dev/sda2 /mnt

4) Try to access the files system.

However, if you still are unable to solve the problem, then you should use a third-party Linux recovery software to perform Linux data recovery. Such tools are read-only in nature and perform Ext2 recovery without overwriting the original data.

Linux data recovery :IVC Process Using ‘lvconvert’ Cause Data Loss

2010-06-05T00:00:00.000-07:00

There are utilities tools available in the market order to safeguard your precious data, and disk mirroring is the most important among them. It is the process of create an exact copy of all the data stored on your hard disk. You can easily convert your basic hard disk volumes to mirrored volumes, which copies your data to prevent any sort of data loss conditions.

On Linux OS based computer, you can convert your linear logical hard disk volume to the mirror logical volume using ‘lvconvert’ utility. However, you should play safely while converting a Linux volume, as interruption to the process may cause hard disk failure and it could cause data loss. At this point of time, you need to opt for Software to recover linux .

The Interrupted volume convert is an inbuilt utility of Linux OS that enables you to change a linear Linux hard disk volume to mirror logical volume. This utility can be used to remove or add drive logs from the mirror devices. The command line utility supports various options or parameters to perform specific task. Some of the most common parameters of this utility are as given below:

1) -m, –mirrors Mirrors-
This option declares the degree of mirror (replica of data) that you want to create. For instance, ‘-m 1′ converts original Linux volume to mirror logical volume with one linear volume and one copy.

2) corelog-
This parameter tells the tool to switch mirror from employing a continues (disk-based) log to in-memory log. It is possible only if –mirror argument is of same degree of mirror that you are modifying.

3 ) R, –regionsize MirrorLogRegionSize
- It divides the mirror into various divisions of defined size in MB (megabyte).

4) -s, –snapshot
- It creates the snapshot from an existing Linux volume using another volume with same origin.

5) -Z, –zero y/n-
This option controls zeroing of first Kilo byte of information in snapshot. The snapshot is not zeroed if volume is set to read-only.

Before you convert the volume, you must backup all your significant information. If the process fails, you can not access Linux volume and stored data and need of data recovery Linux software arises. Linux recovery is best possible using advanced and powerful third-party applications. Linux recovery applications ensure safe and easy recovery in all data loss situations, with read-only conduct and rich GUI.

How to recover lost data from ext3 partitions in linux

2010-05-27T05:19:00.000-07:00

The third extended file system "ext3 file system "is an extremely powerful file system that arranges the data in a well organized fashion and much better than its predecessor, second extended file system "ext2 file system". That's because the ext3 file system remains consistent even after system crash or unexpected power failure.

Lengthy checks after switching on the Linux system are not required to check file system integrity. Also, Data fragmentation in the disk is properly checked. However in Ext3 file system When you delete a file It is not transferred to a trash bin this increases the chance of accidential data loss and you have to use appropriate measures to recover the lost linux data. If that does not happen then a third-party Linux recovery software is required to perform ext3 recovery.

Once you delete a file, only its pointer is deleted from the memory not the file and the file remains physically present there unless it is overwritten by some another file.

Resolution:
In an ext3 file system, ext3grep utility is used to recover deleted files from the Linux hard disk. eventhough it is quiet handy utility, there are some limitations associalted with it like fails to recover the files larger than 2 GB. In such conditions, a third-party Linux recovery software is required to perform the recovery of the deleted files. Such read-only tools are extremely efficient they recover most of the deleted file.

Linux data recovery after hard drive crash

2010-05-25T23:10:00.000-07:00

Crashing of Linux hard disk abruptly every time the system is started is a cause of worry it renders our important data inaccessible Well, the problem may occur due to many reasons like power failure,improper shutdown, virus attack and the most common reason is the missing or corrupt data structures of your Linux hard disk. Due to this reason, OS fails to locate stored files on the hard disk and access them. At this point, you need to opt for Data Recovery Linux solutions to get your valuable data back.

Crash of a Linux hard disk is indicated by the following symptoms.

1) Your Linux based computer fails to boot up.

2) Various error messages, such as “No Fixed Disk Present” or “DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER” are displayed

3) Blank screen after you boot your system.

4) Frequent System reboots and freezes.

5) “OS not found” and “Disk not formatted” messages.

When System crash happens, it becomes impossible for the OS to locate files on hard disk and the boot process fails If it cannot locate and access the required files, In order to fix problem, you are required to format the system and reinstall operating system but this process replaces all the missing, corrupt or damaged system resources. However, it also removes all the data from hard disk and create needs of Linux recovery software to recover all the data from your hard disk.

Linux recovery after data loss due to Logical volume extending Error

2010-05-24T03:07:00.000-07:00

Logical Volume Manager is a part of Linux OS kernel, which manages hard disk and other mass storage devices. It is a way of allocating drive space into various Logical Volumes (L V ) , which can easily be extended or resized instead of doing this with hard disk partitions.

You can easily extend a LV, using lvextend utility. It also supports extension of the snapshot LV. Absolute back up is to be created first before proceeding towards extending a Linux LV. In case the logical volume extending process gets interrupted, you may lose access to logical volumes and encounter data loss. At this point, you have to opt for Linux data recovery software to get your valuable data back.

The lvextend command-line utility, offers you the following options to perform a series of operations on your logical volume-

1) -l, –extents [+]LogicalExtentsNumber[%{VG|LV|FREE}]: It sets or extends the size of LV in units of the logical extents. With + sign, value is contributed to actual size of volume and without this, value is accepted as absolute one.

2) -L, –size [+]LogicalVolumeSize[kKmMgGtTpPeE]: Sets or extends size of LV in the units of MB.

3) -i, –stripes Stripes: Provides number of the stripes for extension. This option is not usable with the LV, which use original metadata LVM format that must use single value throughout.

4) -I, –stripesize StripeSize: Provides number of the kb for granularity of stripes. It does not work on LV, which use original meta data LVM format that must use single value throughout.

All the above options are very useful in modifying a logical volume. However, serious problems occur if the process is interrupted due to any reasons, such as system crash, improper system shutdown,power outages and user error. In such cases, the volume can not be accessed and you encounter severe data loss, which require Linux recovery Software to be fixed.

Data Recovery Linux is best possible using advanced and efficient Linux recovery software. They recover lost data safely and easily in all data loss situations.

How to Resolve Error "Journal Inode is Deleted"

2010-05-23T22:10:00.000-07:00

A Linux OSX based system becomes unbootable in case its file system gets damaged or corrupted or In most of these situations, a Linux user fails to access the data saved on the Linux hard disk. Few causes for corruption in file system (either EXT2,EXT3,or EXT4 ) can be improper system shutdown,virus infection,inode corruption, superblock damage, accidental system shutdown as well as OS malfunction.

To overcome these situations, the user needs to repair the damaged file system with the help of 'e2fsck' command. This command checks and repairs the corrupted files in almost all cases. However, the command does not ensure 100% repair in all file system corruption scenarios. For cases where the above command fails, the user needs to reinstall Linux OS and then restore data from an updated backup. But, in the absence of the updated backup, you will need to opt for a commercial Linux data Recovery application.

To illustrate the above situation, consider a practical scenario where you encounter the below error message while trying to boot your Linux system:

"ext2fs partition type 0x83..... ext3-fs: journal inode is deleted....mount: error 22 mounting ext3 error 2 mounting name switchroot: mountfailed:22 umount/initrd/dev failed:2 kernal panic - not syncing."

Once the above error message flashes on your screen, the system becomes unbootable, further resulting in inaccessibility of hard disk data.

Cause:

The above error message appears when the files gets damaged or corrupted .

Resolution:

Follow the below guidelines to resolve the above error message:

1. Run 'e2fsck' command to repair the corrupted file system.
2. In case, the above command fails to repair the file system, follow the below steps:

Reinstall the Linux OS.
Restore the data from an updated backup.
For cases where there is no backup available, use a third-party Linux Recovery software.

A data recovery Linux utility is a powerful tool that is specifically designed to recover Linux data post clean reinstall of Linux OS. Such tools are very easily understandable and do not require any technical know how.

Linux corruption due to Resizing mounted Ext2 file system

2010-05-19T04:26:00.001-07:00

The second extended file system, popularly known as Ext2 file system is an advanced file system for Linux Operating system. It is possible to resize the Ext2 file system, while it is currently in use . Ext2 online utility has made this possible. you should always have a complete and updated backup of your important data before mounting the file system .if anything goes wrong, you may face serious data loss situations, which requires Linux recovery software to be fixed.

Only the mounted Ext2 file system can be resized. In order to use the ext2online utility, you must have Online support to resize ext2 (CONFIG_EXT2_RESIZE) option enabled in your Linux Kernel. This feature can used after applying appropriate patch for 2.x kernel series.

The file system, as specified by the device, or the mount point must be mounted currently. By default, the size of the mounted file system is enlarged to fill up the device. If an optional size parameter is specified, then it uses the specified size instead. in case it is not available, it is taken from Ext2 file system blocks.

The ext2online utility changes the file system only. When you want to enlarge file system, you should expand underlying storage device first. You can do it , using the lvextend tool that combines file system resizing and LV extensions.

The original algorithm of Ext2 file system doesn’t provide online resizing option. There are some restrictions to the amount of resizing, that you can do while your file system is mounted.

You should always keep in mind that resizing the mounted file system is not an 100 percent safe option its quiet risky and causes file system corruption. At this point, Linux data recovery becomes essential.

Ext2 recovery: Recovering lost data from ext2 Linux system

2010-05-10T04:37:00.000-07:00

The Linux system is an open sourced OS that is used by people all over the world. Unlike Windows and Apple operating systems, it is not a sole proprietary of a single organization. In fact, over 1,000 developers from at least 100 different companies have contributed to its each update.

The most notable thing about Linux is that it can be used absolutely anywhere, from wristwatches to supercomputers. However, Linux systems too can get corrupted. Corruption can occur due to various reasons such as human errors, virus infections, abrupt system shutdown, damaged file system, faulty hardware components, etc. To resolve this issue, you should take appropriate corrective measures. However, if you are unable to do so then you should use a third-party Linux data recovery software to perform Ext2 File recovery of Linux system.

Consider a scenario wherein you are not able to boot your Linux-based system having ext2 file system.

Cause of the Error :
It may be possible that the file system of your Linux system has corrupted and, thus, has become inaccessible. There could be following reasons for this behavior:
1)Virus infections
2) Bad sectors
3) Corruption in the Inode table, group descriptor, or super block

How to resolve:
To resolve this error message, you should perform either of the following methods:

Use the e2fsck command to check for errors in file system and repair damaged Linux file system.
If e2fsck is not able to resolve the issue, then format the system and reinstall Linux.

Formatting the system and reinstalling Linux would solve the problem. But then, you would lose all the valuable data. In such cases, you should use a third-party Linux data recovery software to perform Linux recovery. Such read-only tools perform Linux recovery using fast yet sophisticated scanning algorithms. These tools have a highly interactive user interface that enables you to perform Linux data recovery very easily.

Recovering ext3-based Linux system in case of superblock corruption

2010-05-05T00:00:00.000-07:00

The ext3 file system of Linux operating system is the successor of ext2, and is a journaled file system. Being a journaled system, it keeps track of all the changes that happen to the system before committing it to the main file system. The ext3 file system is also considered to be relatively simpler than other file systems. However, sometimes the ext3 system becomes corrupt and, inaccessible due to various reasons, including human errors, virus infections, power outages, abrupt system shutdown, etc. In such situations, you need to take appropriate corrective measures. However, if you are unable to resolve the issue then you should consider using a third-party Linux data recovery software to perform ext3 recovery.

Consider a scenario wherein you are not able to boot your ext3-based Linux system.

Cause:
The root cause of this problem is that the superblock of the file system has corrupted. The reasons for the superblock corruption could be power failures, virus infections, human errors, etc.
A superblock contains the metadata of the file system that contains all the information such as file system type, size, status, and information of other metadata structures.

Resolution:
To resolve this issue, you need to perform the following steps:
1.Mount the partition under /mnt/sdb3 assuming that corrupted file system is at partition /dev/sdb3.
2.Take an image of the disk by the following command:
dd if=/dev/sdb3 of=/sdb3-backup/image/backup
3.Use the following commands to restore the superblock:
dd if=/dev/hda2 of=/dev/xyz
and
e2fsck -b 32768 /dev/xyz
4.Copy the data using the following command:
cd /mnt/sdb3
cp -R /mnt/sdb3/data /sdb3-backup/copy/.

However, if you are unable to rectify the issue using the aforementioned method then you should use a third-party Linux data recovery software. Such read-only tools employ fast yet sophisticated scanning algorithms to recover data from various types of hard disks such as SCSI, SATA, EIDE, IDE, etc. But before buying any recovery software one should make sure that the software will be able to perform recovery. For this one should download the demo version of the software to check for its recovery capability.

Stellar Phoenix Linux Data Recovery is an efficient ext3 recovery software that enables you to recover lost data from Linux systems. Apart from recovery of ext3 file systems, it is able to effectively perform ext2 recovery and ext3 recovery. This Linux data recovery tool is supported by various Linux distributions such as Red Hat, SUSE, Debian, Caldera, Mandrake, Sorcerer, TurboLinux, Slackware, Gentoo, etc. This tool is compatible with Windows 7, Vista, Server 2003, XP, and 2000.

Linux data recovery after file system corruption

2010-04-27T02:35:00.000-07:00

In Linux OS all the information about the file required during the booting of the system are stored At the Root File system,
This file system is saved on the same partition where the root directory is situated. Corruption in this file system can be due to the following reasons

1) Improper system shutdown
2) OS malfunction
3) virus infection
4) Power Surge
5) human errors like accidental deletion

In most of the cases, the system becomes unbootable, resulting in inaccessibility of hard disk data. To get past root file system corruption, a user needs to run it by running FSCK command manually. However, if the corruption persists even after running the FSCK command, then the user needs to opt for a third-party Data Recovery Linux application.

To explain the above case, consider a practical scenario where you encounter the underneath error message while booting your Linux system:

“*Checking root file system…
/contains a file system with errors, check forced
/:
Duplicate or bad block in use!
/: Multiply-claimed block(s) in inode 8: 1024
/: Multiply-claimed block(s) in inode 81297: 1024
/: (There are 1 inodes containing multiply-claimed blocks.)
?: File (inode #8, mod time Mon Dec 26 21:40:14 2005) has 1 multiply-claimed block(s), shared with 1 file(s):
/: /bin/zless (inode #81297, mod time Fri Jul 8 22:19:49 2005)
/:
/: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY
(i.e., witjout -a or -p options)

*fsck failed. Please repair manually and reboot”
The error message makes the system unbootable and the hard disk data inaccessible.

Cause Of the above error message:

As stated in the error message, the root file is damaged or corrupted.

Resolution of the above problem is given below:

To get rid of the above error message, you will need to follow the steps given below

1) Run FSCK command manually.

2) If the command fails, restore the data from an up-to-date backup.

3) If no backup available, then format the hard drive and reinstall the operating system. To recover formatted files post re-installation, use an effective Linux data Recovery application.

A Linux data Recovery tool uses effective recovery techniques to recover lost file/data from a formatted Linux system.

linux recovery after data loss due to virtual drive

2010-04-25T23:02:00.000-07:00

A virtual drive is just like general hard drive in a PC,in actual it is the emulation of a hard disk where a traditional Linux file system resides on physical drive partition. Because the virtual drive offers more flexibility of data storage, users consider converting all their file system divisions to the virtual disks. After converting divisions to virtual disk, you can access them only through virtual disk nodes.

To migrate to a virtual drive from system based divisions, unmount your Linux file system on the division . Then create simple virtual drive for every division with the help of Virtual Drive Manager. Divisions are allocated to the virtual disks. When the Linux file system is in the simple virtual drive pattern, migration to another array pattern could be wrong without removing the hard drive. Always make sure that the divisions are not accessed during migration process.

To simply convert file system divisions to virtual drive the following steps are to be followed:

1) Unmount the file system on divisions

2) For every drive division, choose New from drive menu, insert a simple virtual drive and allocate divisions to virtual drive. It overlays every division with simple virtual drive.

3) For every drive division, choose Modify from Disk Menu and migrate simple virtual drive to desired RAID* type.

4) Use File System Manager for updating the information of mounted on the file system. Replace the divvy** device nodes of file system with their virtual drive ones.

In this way, you easily convert your hard drive to a virtual disk and can take benefit of greater flexibility and improved performance. But if the conversion process gets interrupted by any of the reasons like sudden power failure, irresponsive OS, unexpected system shutdown or restart because of already mounted volume etc. we may face serious problems of data loss.

Not all Linux systems are licensed to use Virtual Drive Manager. Unfortunately, if your system isn’t licensed and you are trying to convert your partitions, Virtual Drive Manager exits with some error messages. All these situations put you in trouble of data loss and you need to perform Linux Data Recovery to overcome this problem. The recovery in Linux can easily be achieved using third party applications, known as data recovery Linux software. Linux recovery software are particularly designed to meet recovery requirements of all Linux users.

Ext4 recovery: Resolving Error in Ext4 Linux File System

2010-04-24T09:45:00.000-07:00

Ext4 or Fourth Extended file system is latest file system in linux. It is widely adopted as the successor of Ext3 file system as it has a number of powerful advance features. These features improve performs, stability, integrity,security and consistency of our PC. However, in some cases, your Ext4 file system volumes becomes difficult to mount or inaccessible due to Some error in the file system. Such situations cause data loss and need Linux Recovery to be sorted out.

In a practical scenario, you may encounter freezing of the system, while working on your Linux computer. The system may stop responding . At the same time, you can not mount your Ext4 file system volume and the file system looks to be damaged. When you try to mount the Linux volume,below error message is displayed:

A) "mount: wrong fs type, bad option, bad superblock on /dev/sdb1, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so"

When you try dmesg, it gives you further error message:

A) "EXT4-fs: ext4_check_descriptors: Block bitmap for group 0 not in group (block 727012683)! EXT4-fs: group descriptors corrupted!"

At this point, when you run fsck utility to perform linux data recovery by fixing the issue, you encounter a long error that may include messages like:

0) "Inode table for group 0 is not in group. (block 1236188664)

WARNINGS

SEVERE DATA LOSS POSSIBLE. Relocate? No

0) Inode table for group 1 is not in group. (block 600148394)

WARNING: SEVERE DATA LOSS POSSIBLE. Relocate? no"

As stated in the above error message, you may encounter critical data loss conditions if you relocate the Inode table. Backup proves a great help in such situations. However, if the backup is not available or else it is not updated at all, Data recovery Linux Software comes for your rescue.

Data Loss due to "Linux Unified Key Setup" Encryption

2010-04-20T03:08:00.000-07:00

Protecting your Secret data from unauthorized access is a major concern for business houses. To prevent unauthorized access of your confidential data, Linux provides "Linux Unified Key Setup" its a data encryption technique. The LUKS is a hard disk encryption standard that guards your data by offering the standard "on-disk-format". It also avoids the possibility data loss due to sabotage and need of Linux data Recovery.

The "Linux Unified Key Setup" determines a platform-independent encryption standard to use in several tools. It not only provides interoperability and compatibility with many different applications, but also insures that password management is applied efficiently in a secured and documented manner.

Although, LUKS (Linux Unified Key Setup) is a pretty useful standard to encrypt your confidential data and information, but under some circumstances it may lead to data loss. You may come across data loss if you perform any of the below operations on your Linux hard disk that uses Linux Unified Key setup encryption:

1) Boot your system with any of the itoi, iswsusp, or is2 matching arguments to appropriate kernel in init script.

2) Boot the kernel with noresume, noresume2 options or non-matching hibernating Linux kernel and resume from the previous image on next boot.

3) Try to resume the process with different Linux kernel. If new kernel has the suspend2 support, you encounter a warning message bout the version mismatch. At this point, you should press Shift key for rebooting the system. You must not continue booting the system. Resuming the system with different kernel may crash or corrupt the system and may lead to file system corruption.

4) Mount partitions, which are mounted during suspended and then you try to resume them.

In such situations, backup proves a real help to preform Linux Data Recovery. You can easily restore your valuable data from backup. However, if the backup not updated or corrupted, you are required to opt for third-party Linux recovery solutions.

The Linux data Recovery Software enables you to scan entire hard disk through its efficient scanning techniques and extract all lost, missing,and inaccessible file. They have simple and rich graphical user interface and thus allow us to carry out Linux Recovery operations on your own. The applications preserve integrity of our data as they have read-only and non-destructive conduct.

File system Journaling And Ext3 recovery

2010-04-19T02:15:00.000-07:00

Most of the File systems in Linux Like ext3,ext4 support journaling in file system and thus they are less prone to corruption. But as all problems can’t always be ruled out, a Linux volume can get corrupt for many reasons. Though you can delete the corrupted volume to resolve such issues, but Linux Recovery is always a primary concern to save all data .

Here is one of the problems that a Linux generally experiences while mounting a volume. Consider you are a Linux user. You successfully shutdown your computer, but it fails to boot when you try it again it shows the below error report on the screen:

1).EXT3-fs error (device dm-0) ext3_check_descriptor: Block bitmap for

2)mount: error 2 mounting none

3)EXT3-fs group descriptors corrupted

4) mount: error 22 mounting ext3

5) group 0 not in group (block 41471)

6) switchroot: /initrd/dev failed: 2

7) Kernel panic not syncing: Attempt to kill init

This error report is preceded with the general information regarding mounting of the volume.

Reasons

The Above errors most likely occur because of journal file corruption in ext3 File system logical volume.

Ext3 is a journaled file system that keeps record of all the changes in a journal file. This file is helpful in bringing the file system back to its original state after any system crash. Damage to journal file can cause serious Problems

Solution

In order to resolve the discussed issue, you should follow the below mentioned steps:

• Boot the system with the help of system Rescue CD

• After booting the System, you can run fsck.ext3 command to repair the corrupted ext3 volume

However, if the problem persists, the only solution is to recreate the volume and restore lost data from the recent backup.

There are situations when data backup is not in usable state. To deal with such issues, you can use Ext3 Recovery software. These are perfect Linux Recovery tools designed to scan a corrupted or deleted Linux volume and extract possible data to a safer location.

Ext3 recovery and no journal on file system error

2010-04-15T22:30:00.000-07:00

Ext3 is a journaled file system and maintains a journal file to prevent metadata corruption. Due to its wide testing base and relative simplicity, the file system is considered to be Quiet Stable if compared it with other file systems,but it is not completely immune to crashes. sometimes you might receive some errors when using a Ext3 formatted disk, you may receive error that system doesn’t find any journal on the file system. As a solution, you have to reinstall the system. In such situations, you need to check the status of your backup whether it is working and updated recently or not. But if you observe any backup related issues, Linux recovery tools are to be used .

For an instance, while attempting to mount your Linux based hard disk, you might come across the following error message:

“ext3: no journal on file system”

The system fails to boot and Data becomes in accessible. If you boot the system somehow, you may observe that some of the files and folders are missing from the system.

Among various reasons possible for this behavior, some of them are as below:

· File system is severely corrupted

· No or corrupted journal file

· You have recently updated the kernel but the process ended abruptly

To try resolving the issue, follow these steps:

· Boot the Machine using an installation drive and access the Rescue Mode. Mount the existing installation and reinstall the improperly installed kernel package

· journal file can be created by executing the below command:

tune2fs -j /dev/yourpartitionid

· If above measures fail, try repairing the file using the command "fsck". Boot the system using an installation disc and access the Rescue Mode. While making the system unmounted, run fsck for all the hard disk partitions except the swap partition.

If these measures don’t help and your data still is not accessible, use Linux recovery software for successfully recovering your lost data. Linux data Recovery applications incorporate high end scanning algorithms to scan the logically crashed media to recover data while maintaining their integrity.

Linux recovery : Data loss due to Damaged Hard Drive

2010-04-11T23:07:00.000-07:00

In Linux OS, the hard disk volume is mounted by the disk labels, in place of the device paths. It is a very effective approach as the disk path and name can get changed when you boot your system and so can create a number of Errors in your system. Therefore, the labels are assigned to Linux volumes so that they can be mounted at correct place But in some situations, the disks can not be mounted and accessed due to disk label corruption and you face critical data loss conditions. In order to extract lost data in such situations, Linux recovery Software's are required.

The drive label is very important data structure for accessing a Linux hard disk volume. All the entires for volumes to be mounted during boot time are stored in (/etc/fstab) file. When drive labels get damaged, Linux volumes fails to mount and thus all your important data becomes inaccessible.

This issue may occur during the booting of the system. When the system is shut down in improper way, fsck runs automatically at startup. This command-line utility checks integrity of hard disk and file system to detect and repair errors. However incomplete or improper processing of this tool may increase the chances of corruption in file systems. This behavior of Linux OS needs Linux data recovery tool to be handled.

When you run the fdisk command to change hard disk partition table, following error message may occur and the process gets terminated:

“Warning: invalid flag 0×0000 of partition table 4 will be corrected by w(rite)”

The above error indicates that there is a volume label corruption and due to the same, volume can not be either seen or accessed. In such cases, backup proves as real help to restore your data from affected storage media. But in case if the backup is not available, Linux data Recovery Software are needed for extracting lost data.

These applications are developed to scan the whole hard disk throughly and extract all inaccessible,lost and missing data from the system.

How to rectify ext2 file system error in linux

2010-03-28T22:11:00.000-07:00

Linux is most widely used open source OS, it offers enormous security features. By using dual Boot the Linux Os can be installed in a system using Windows OS. This (dual boot) allows you to use features of both Linux and Windows OS. The boot loader enables you to select any of these OS to boot from. However, this behavior may sometimes cause damage to the Linux volume. This behavior leads to serious data loss situations and Data Recovery Linux are required to get your precious data back.

In a dual-boot system, you can access data from your Linux hard disk, even if you have used Windows OS to boot the system. To access data, you need to mount the Linux volume. But in some situations, the mounting process can not be completed and the following error messages are displayed :

“mount: wrong file system type, bad option, bad superblock, or too many mounted file systems”

Or

“can’t find ext2 File System on dev ide1 (22, 65)”

When these errors are displayed then in that conditions your access is denied and you can not access data from the Linux hard drive partitions. If you try to boot the system using Linux operating system, it fails to boot up. It causes data loss and need Linux data recovery software to get your valuable data back.

This issue occurs due to corruption in the Ext2 file system of your Linux. The file system or Linux hard disk might be damaged due to numerous reasons such as improper mounting of the hard drive,virus infection,improper system shutdown, operating system malfunction and power surge

You can solve this problem by restoring lost data from the backup. If you do not have backup or its not updated, Linux data Recovery softwares is required to handle the situation. The data recovery can be done with the help of third-party Ext2 Recovery applications. The tools use powerful scanning algorithms for in-depth scanning of the hard disk and extracting lost data from it. You can easily recover lost data using these programs even if you do not have prior technical skills as they have simple graphical user interface.

Resolving "read only file error" in LINUX OS

2010-03-26T05:07:00.001-07:00

Is the Linux machine facing “Read-only file system” error while booting ? Does the system refuse to boot in dual-boot configuration with Microsoft Windows OS ? When you face this behavior your data becomes inaccessible at the same time, system may stop responding and the need of hard reboot arises. This overall behavior leads to significant data loss situation on your Linux system and need Data Recovery Linux to be sorted out.

In order to try fixing this issue on your Linux Machine, identify the root cause of this problem. You may come across such circumstances due to any of the below reasons:

1) Hard disk failure

2) Improper unlock addresses for the LPC flash chip

3) Damaged or corrupted file system

Linux OS automatically re-mounts the file system as read-only as the hard disk fails.In order to detect the affected system component and fix it, go through the underwritten steps:

1) Unmount the file system.

If you find that file system is corrupted

2) Format the hard disk.

3) Run fsck command-line utility on the affected Linux hard drive.

Formatting is the process of creating a new copy of all the hard disk DS, including file system. It removes all types of error from the hard disk. This process causes severe data loss, if the backup is not taken . In such conditions, Linux data Recovery come for your rescue. You can carry out safe, quick, and easy Linux data recovery through third-party data recovery applications.

Such tools are known as Linux Recovery utilities. They use efficient scanning techniques to perform thorough scan of hard disk and carry out absolute recovery in most of the logical data loss situations.

Corrupted file system and Linux data recovery

2010-03-24T02:10:00.000-07:00

File systems Are the most important Part of every computer OS. It does management of all the data in a system. Operating system only deals with the file system to access data from your hard disk. In Some conditions, this complex structure gets damaged and all the data stored on the hard disk becomes inaccessible, Whenever FSCK fails to do repair work it will alert you about the unrepairable problems. The problems generally caused by the power failures,improper system shutdown,virus infection and user errors.

File systems integrity is automatically checked by Fsck command during boot process. It detect and correct all the errors before your system is functional or ready to be used. Use of the damaged file systems make the situation worse.

When fsck detects any issues pertaining to unrepairable of the system disk, you need to have in-depth knowledge of the working of the file system and type of damage that may occurs to a file system.

You should only run the fsck Command on the unmounted file system. Applying this tool on a mounted file system may invites trouble and serious data loss situations. It is due to the fact that it accesses raw drive and could thus alter file system.

In the case when the file system is unrepairable or applying fsck on mounted file system, you may come across serious data loss situations that need Linux data Recovery to be handled. Data Recovery is best possible through powerful, effective and efficient Linux Recovery applications.

The software uses advanced scanning algorithm to carry out in-depth scan of entire hard disk and retrieve all the lost data from it. Linux Data Recovery tools is quiet easy to use and do not alter original data on the hard disk.

Linux data recovery software to recover lost data

2010-03-22T21:45:00.000-07:00

The amount of information that is generated each year is incredible, growing in leaps and bounds as technology evolves. Storing all that information is not an easy task, as we have to protect data from being lost because of lot of reasons, including being inaccessible,deleted,lost,corrupted or formatted.

Since the data is most important things in todays techno savvy world so loosing data is big cause of worry. The next thing you look for os a software that recovers the lost data efficiently. You can use the data recovery tools for that purpose. There are data recovery options for both for Linux and Windows.

The Linux data recovery software can be used in the cases when the following things happen to your computer:

1) OS is corrupted or it crashed

2) lost or deleted volumes

3) lost folders or files on Linux

4) hard drive was formatted

5) hard drive was formatted

Now the Linux data recovery Software is capable of doing the following things.

1) Recovery of a Linux Formatted Disk

2) Recovery of a Linux Partition

3) Ex2, Ex3 and Ext4 Recovery

The Linux data recovery software can do all the things that are mentioned above. The strong algorithm behind this software will find all the deleted, formatted, corrupted or inaccessible folders and files.

After it finds the files, the software repairs them . In the end, the recovered files will be put in the same place where they were before, so you can use them again.

How to perform Ext4 recovery operations in Linux

2010-03-18T03:12:00.000-07:00

The Fourth Extended File System Or Better known as ext4 file system was released in Linux 2.6.28 is a complete journaling file system, it is a successor of Ext3 file system. Prior to this the maximum limit for data storage was 64 bit and Ext4 was developed as a sequence of the backward compatible extensions for enhancing these limit. It is undoubted the most important benefit is that it is safe to use Ext4 file system in production environment, but some times, delayed allocation may lead to data loss situations. Also,there are lot of errors associated with the users, like accidental deletion of data. In such cases, it is imperative to use Ext4 Recovery solutions to recover the lost data.

When you delete files from the Ext4 hard disk , the files remain physically intact logically file are not deleted . the deletion operations merely deletes the file system entries and file system pointers hence the OS can not locate any files at a location and it declares disk space as available. At this moment the need of Linux data recovery softwares arrives deleted files can be recovered by applying Linux Data Recovery methods.

You can easily recover deleted files from Ext4 file system volume with the help of “Extundelete” utility. The utility examines file system journals and other data to recover the lost data, using ext2fs library. This tool is based on ext3grep tool. Extundelete is able to retrieve both file name and contents of the deleted file.

Although, it is a very useful and effective tool, but it can not guarantee absolute data recovery. Moreover, Extundelete can not perform Data Recovery Linux if there is damage in the Ext4 file system Journal. In such times taking backup of the data is the most excellent way to safeguard your data against all types of data loss situations. But, if the backup not updated,or available then you may face grave situations of data loss.

At this point, it is possible to recover all your important data from Ext4 file system volume, through Ext4 Recovery Software. These are effective and powerful third-party applications, which carry out extensive scan of entire Linux hard disk to ensure perfect recovery of lost files, directories, and hard drive volumes. The software have self-explanatory and simple graphical user interface and read-only conduct for easy and safe recovery.

Linux recovery After data lost due to grub corruption

2010-03-14T08:33:00.000-07:00

Fsck (file system check) is a utility In Linux operating system; it allows checking file system and hard disk integrity. Generally, it runs automatically as system boots when Linux OS finds that the file system is not inconsistent, indicating improper system shutdown due to system crash or power loss whatever it is However, if you run fsck tool on physical volume, some error messages are displayed these error prevent you from accessing your data and lead to data loss situation. At this juncture, you need to use Linux Recovery software to extract lost data.

When you find such error message, use the ‘pacman’ utility for upgrading your Linux kernel.

it is an application of Linux OS, which is used for managing other applications. This tool uses files in the form of packages and organizes databases based on text. This is helpful in deleting, upgrading and adding, the packages in Linux OS Based computer.

After the completion of up-gradation process Of Linux kernel, the system may fails to boot up. It may stuck on the boot screen. Despite of loading the Grand Unified Boot Loader and starting, following message is displayed

“loading GRUB”

In these cases, If the system is booted using the floppy disk the below error message is displayed:

ERROR: (device hda1): XT_GETPAGE: xtree page corrupt

After the above error message, if you run fsck tool, the following error occurs:

“Errors detected in Primary File/Directory Allocation Table.
File system object FF65726 linked as: /var/run/random-seed
File claims cross linked block(s).
Cannot repair FF65726.”

This problem is caused by corruption of GRUB or Linux file system. In such cases, hard disk is to be formatted, which removes all the data from hard disk. To recover the lost data, Linux data recovery software is required.

You can recover lost data using Data Recovery Linux utilities. These are third-party applications, which are capable of systematically scanning the entire storage disk and extract all lost data from it. These Software’s have simple and self-explanative rich GUI.

Boot Failure in Linux-- cause and solution

2010-03-11T21:30:00.000-08:00

In Linux and UNIX OS, daemon is the computer program that run in the background And not in direct control of the user. These daemons Are used to configure your hardware like devfsd and it performs task like scheduled run of cron in your Linux OS. But sometimes, these programs fail to start while booting the Linux system. It can occur due to inconsistencies or corruption issues in the file system. In such circumstances, you need to use most recent and valid data backup to restore the data. However, if the data backup fails then efficient Linux Data Recovery application are to be used to recover the lost files.

Consider a Situation, you try to boot Linux system and daemons fail to start. Additionally, when you reboot the system, you get error message and When you use the boot drive to mount your root partition, it fails.

Cause For the failure

As described above, if root partition’s file system suffers from corruption, the daemons may fail to start at boot up. It can occur if any of the structures like inode, super block, etc is damaged due to user errors like unexpected system shutdown, incorrect use of commands and more.

Solution

You can follow these steps to solve this issue:

• You can run the fsck command to diagnose and repair file system issues of hard drives root partition.

• you need to reformat the hard disk and restore the lost data from a recent data backup If you find errors that fsck can’t fix . A format operation erases all the data from the selected Linux partition. But, if you do not have a valid data backup, you need to scan your hard drive using data recovery Linux software to recover the lost or inaccessible files.

Linux Data Recovery application is specially designed to scan affected from logical data loss. These software can locate the missing information and then safely restore an recover it. You will find such Data Recovery Linux tools with user-friendly interface plus remarkably fine recovery capabilities.

Hard drive recovery from Linux OS

2010-03-05T22:21:00.000-08:00

Data recovery tool to recover data from corrupted Or damaged operating system. It is wide known fact that Linux Operating system is the most Stable OS and the possibility getting it corrupted is very less But due to some human error the Linux OS may create some problems the access of data is denied that implies that your data is either corrupted or lost now to get the data back the need of Linux data recovery software's arises.

The need of Data recovery arises in the following cases

1) OS gets corrupted

2) Formatted the hard disk by mistake

3) Missing quantities or volumes are deleted

Linux data recovery software's scans the entire hard disk to find the missing files. After that it rearranges them in a hierarchical structure. During theses steps the need to have high tech knowledge is not required to work on Linux data recovery software.

The Linux data recovery software's very user friendly. The Linux software for data recovery with strong search algorithms and techniques can get terribly corrupted Linux files and directories. The software support most of the operating system, such as – Windows ME, NT, 9x, 2000, XP and Linux operating systems, such as – Red Hat, Caldera Turbolinux, Gentoo Linux, SCO, SuSE, Mandrake and many others.

You can always download the updated version of Linux data recovery software on line. In this crucial data recovery Linux software always gives you full satisfaction.

Data Definition command and Data Loss

2010-02-23T01:18:00.000-08:00

In Linux computers,data definition command line utility provides several advantages like low-level copying of data,conversion of raw data from hard disk to any otherther storage medium.

This tool allows you to copy data blocks, so that in case of any problem, data that is stored after and before string would be copied. But wrong use of the parameters in this command may cause serious data loss situations and need Linux Data Recovery software to sort out this problem.

Data definition is a useful command-line tool Used in Linux it helps you to carry out quick and easy recovery in case of and data loss to your system. This command enables you to create image of even entire Linux volume and restore the system in case of any damage. On new hard disk, target partition is created having same size and structure as that of the failed one. Then this utility is used for copying data from source disk.

Although, this process is quite safe and easy, but a minor mistake during operation might be very dangerous. This behavior of Linux operating all of your valuable data inaccessible. At this point, you need to perform Linux Data Recovery to access your valuable data.

Linux errors and Table corruption

2010-02-16T23:11:00.000-08:00

Linux Loader is used in Linux as the standard boot loader. It is placed in the boot sector of the MBR. While starting the system LILO loads, it then performs series of steps'. But if the LILO operation fails at some point of time, you can't boot Linux and access your data. To recover the lost data, it is advised to use the recent back up . However, if data backup is not up to date, Linux Recovery solutions are to be used to extract the inaccessible data.

Lets us consider a scenario, in which you start the Linux system then the booting process halts suddenly with three letters 'LIL' on the screen. Now you face a situation in which you cant Boot the Linux system.

The above scenario occurs when the descriptor table is damaged or corrupted. To solve the problem, you need to carry out the following methods:

1) verify whether the disk parameters in BIOS (Basic Input Output System) are correct or not.

2) After asserting that the Disk parameters are correct then try to reformatting the partition and after reformatting the drive re installation of LILO is done And after the whole process is completed successfully You need to restore the lost data with the use of an updated backup

if you face some issues with the backup then the Linux Data Recovery applications should be Used.

Fsck should be used to check and correct any corruption issues.

Linux Recovery software are specially developed to recover and restore the lost data safely. These softwares have a very powerful scanning algorithms to locate missing information.

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Data Backup In Linux: How to Use mondoarchive Command

2010-02-08T22:42:00.000-08:00

Data loss often leads you towards a terrible situation and No one claim to own a system that is 100 percent secure towards the data loss,Whatever hardware and system configuration he have. but this situation can be prevented by creating a reliable and complete backup. Mondoarchieve command is used in Linux operating system,for this purpose. It backups a subset of all your files in the system,it even the images of non-Linux file system as ISO images in CD.

In case of critical data loss situations, it easily restore all your data and information, taking your system to its original state if required.

Two parameters for different operations are provided by this utility

-V: This parameter lets mondoarchive command verifies backup against the live Linux file system.

-O: This parameter lets mondoarchive command to take a backup of entire file system .

mondoarchive command can be used to make this auto-detect as many configuration settings as possible, then create backup and verify the operating system or the subset after the process.

To restore data from backup, you can either run the Mondorestore from command line or boot your system from floppies/CD generated while backing up the data.

In case if the Of damage of this backup,you can not restore data from backup and need arises for Linux Recovery . The Data Recovery Linux in such situations is possible through the use of third-party applications.

These utilities are known as Linux Data Recovery software. They use Efficient scanning techniques to methodically scan the entire hard disk and retrieve all the lost data.

Linux error and recovery

2010-02-04T20:51:00.000-08:00

File Systems in Linux follows hierarchical directory structure, In hierarchical file system everything starts from a root directory. The root directory then expands into its sub-directories. The file systems Ext3 and ReiserFS are less prone to corruption in comparison with the Ext2 file system, thats because Ext3 And Reisers file systems supports Journaling And they can replay journal to recover from unexpected crashes. But some times Journaling fails that occurs in serious case of file corruption in that case, tools like fsck are used to repair the file system or ultimately format the partition.

To restore and recover the lost data, you need to have updated and valid data backup. But, if data backup itself fails to deliver the required information, Linux Data Recovery tools can come to the rescue to recover the lost data.

Consider a scenario, while trying to start a Linux system you receives error message Like:

1.) Multiply claimed block

2.) The boot process fails with this error message and you can't access the data.

When your system starts and it searches for file system and if doesn't find the file system in good state, it runs fsck check. File system can get corrupt because of hardware issues,virus infection, unexpected shutdown, network errors and other similar reasons.

To solve the error "multiply claimed block" you need to follow these steps:

You need to manually run the fsck command. It can repair file system errors like the ones that occur when file system is unmounted or mounted as read-only.

If running fsck doesn't resolve the issue, reformatting the hard disk and reinstalling the operating system is the only solution left. But This process deletes all the data. In such cases, backup of data is used. But in some cases, data backup can be incomplete or corrupted . To recover data during such situations, you can use commercial Data Recovery Linux applications.

Converting Linux File System from Ext3 to Ext4

2010-01-29T23:05:00.000-08:00

The Ext4 file system better known as Fourth Extended File System is developed as a successor of Ext3 File System it is the most advanced and effective journaling file system. It is developed to provide high performance and it also removes 64-bit storage limits that earlier file systems have. It supports backward compatibility with Ext2 and Ext3 file systems. Thus it is possible to mount Ext3 and Ext2 file system as Ext4.

To avail the benefits of these advanced features, you need to upgrade the file system from Ext3 to Ext4 And full backup Of all the data should be created before migrating the file system,because failure of the migration process may lead you to serious data loss situation and in that situation Linux Data recovery software Is required to sort out the problem.

Process of converting a non-root file system

If you are converting Ext3 file system . Follow underwritten steps for conversion:

a) Unmount the volume.
b) Run file system check by using fsck.ext3 .
c) Use tune2fs command to Enable new features of Ext4.
d) Run fsck.ext4 command. To fix the error.
e) Edit /etc/fstab file to make it “Ext4” in place of “Ext3” file system for /home.
f) Mount the new file system.

Although, it is a good idea to do conversion operation of your file system from Ext3 to Ext4, but in case if the failure occurs and you do not have complete backup of your valuable data, you might face serious data loss and need to carry out Data Recovery Linux operation . This can be best done using Linux Recovery Software.

Serious Data Loss in Linux Due to Use of Damaged File System

2010-01-27T02:12:00.000-08:00

File systems are the most important component of every operating system. Its main job is to manage all the data on your hard disk. Operating system directly interacts with the file system to access the data from hard drive. Some time this complex data structure gets damaged and all of our data stored on the hard disk becomes inaccessible.

In Linux computer Fsck Command can be used to check and repair minor error related to file system. If this tool fails to repair, then in that case it alerts us that the file system, is unrepairable. In this condition Linux Data Recovery software is required to handle the situation.

Linux systems are basically setup to check file system integrity during boot process, through fsck command.If data structures are not in good condition then further use of damaged file system could possibly damage them even more, causing Situations of grave data loss.

You should run the fsck command on an unmounted file system only . Applying this tool to a mounted file system severely damages it and cause serious data loss . It is due to the fact that it accesses raw disk and could thus alter file system.

In the case when the file systems becomes irreparable or fsck is used on mounted file system, you may come across serious data loss situations and then Data Recovery Linux software is needed to handle such situation.

Recovery is best possible through powerful and efficient Linux Recovery applications.The software uses advanced scanning techniques to carry out scanning of entire hard drive and recover all of the lost data from it. Linux Data Recovery tools are pretty easy to use and it do not alter the original data on hard drive.

Data Loss in Linux Due to interrupted disk moving procss in volume group

2010-01-24T08:26:00.000-08:00

The computer hard drive comes with limited storage capacity and becomes full or their performance get reduced . In such cases, you need a New hard drive with more storage capacity. To prevent data loss you should transfer all the data to new drive before changing your old drive . It can be done through "pvmove command-line tool" in Linux operating system. you must backup all your data Before trying pvmove peration, as a failed process may cause serious data loss .

You need to simply run the following command:

# pvmove /dev/hdb
pvmove —- moving physical extents in active volume group “dev”
pvmove —- WARNING: moving of active logical volumes may cause data loss!
pvmove -- do you want to continue ? [y/n] y
pvmove —- 249 extents of physical volume “/dev/hdb” successfully moved

old extents are distributed to the newly added disk: you would have to add another disk to volume group If the physical extents are not free for distributing old physical extent, and then move extents to replacement disk. Data from the old hard drive to the new one is moved . I t is not very essential to un mount the file system before you go for it. Prior to start moving data, full backup of all your data should be created.

Although, the above method is quite important and it is widely used, but in some situations in the case when move operation is interrupted and then moving active logical disk volumes could lead to data loss and in that situation Data Recovery Linux is needed to extract data.

This Linux Recovery can be performed very easily with the help of "Linux Data Recovery" software. They have very simple and interactive graphical interface for users and thus do not require prior technical skills to retrieve lost data. The software have read-only conduct to perform recovery operations.

Resolving Ext3 Error through Linux recovery Utility

2010-01-17T23:41:00.000-08:00

Ext3 is a journaled file system and it maintains a journal file to prevent occurrence of data corruption due to unexpected power failure. The Ext3 file system is a bit more safe than other file systems because of its testing base and relative simplicity but even it is not completely immune to crashes. It happens some times that while using a Ext3 formatted drive, you might receive errors regarding non availability of journal on the file system. As a solution, you have to reinstall the system. When you face such situation, you have to check whether your backup operations are up to date and you can restore the data.

But in the situation when there is some problems in the backup then only one option is left with you And that is to use Linux recovery utilities.

For example, while attempting to mount your Linux based hard disk, you might come across the error message:

“ext3: no journal on file system”

The system fails to boot and data is inaccessible. Even if you boot the system somehow, you may observe that some of the files and folders are missing from
the system.

There may be many reasons for the error some of them are following:

1) You have not properly updated the kernel in the last update operation.

2) The journal file might have been corrupted.

3) The File system is severely corrupted

Now question arises how to resolve such situation, Below are some of the task you can perform to do that:

1) The system has to be boot up with an installation disc and rescue mode is accessed. The Existing installation is Mounted and Kernel package is properly
installed.

The jouranl file can be created by executing the below command--

" tune2fs -j /dev/yourpartitionid"

If above measure fails, then Fsck command is used to to repair the file.

Now boot the system using an installation disc and the Rescue Mode is accessed. While making the system unmounted, run fsck command for all the hard drive partitions except the swap partition.

If You are still unable to Get access of your data then as a final resort Linux Data Recovery tools are used for successfully recovering the lost data. Linux Recovery applications incorporate highly efficient scanning algorithms to scan the logically crashed media and recover data while maintaining their
integrity.

Changing the boot loader and Error message

2010-01-14T22:36:00.001-08:00

A boot Loader allows us to load the operating system in the computer’s memory. Linux Loader (LILO) is the Most commonly used Linux boot loaders other popular boot loaders are Grand Unified Boot loader (GRUB) and Tiny PIC. We can install and replace a new boot loader with the pre installed boot loader. However, we may sometime get an error message after installing a new boot loader device. These messages won’t allow you to boot the operating system and make the data saved in the hard drive very Difficult to access or in accessible. In such circumstances, you need to restore the inaccessible data from backup. If there is no backup available or the backup is also corrupted, in such a situation you can still recover the lost data by using efficient Linux data recovery tool.

Consider a scenario in which LILO boot loader is pre-installed and have decided to replace LILO with GRUB. To install GRUB, Following commands are to be typed:

"apt-get -t unstable install grub
grub-install /dev/hda5"

When the installation process was in progress, you will receive the following error message:

“Error 6: Mismatched or corrupt version of stage1/stage2”After the display of the error message, the installation process gets halted. When you try to boot your system, it fails to do so.

Cause:
The main reason behind this error message is that the install command is directed to corrupt versions of the stage-1 or stage-2. To prevent the occurrence of
the error message, you need to make sure that boot grub contains all the latest stage files.

Resolution:
To boot the system successfully and resolve the above error, you need to uninstall the GRUB boot loader through the following command:

"apt-get –purge remove grub"

However, even after doing so , if the system remains unbootable, you have just the option of reinstalling the OS. A clean reinstall of the operating system will completely delete the previously saved data from your hard disk. For full recovery of the lost files and folders, you need to use effective Linux Data Recovery application. Such recovery utilities have advanced scanning methods to perform full recovery. These user-friendly Data Recovery linux applications provide interactive and User interface with detailed documentation.

Write Back Cache and File System Corruption Problem in Linux

2010-01-10T21:12:00.001-08:00

Caching technique in which the changes to the data in cache are not copied to cache source unless it is highly required to do so is known as Write Back Cache . This technique is implemented on the hard drives to improve the write performance. It is very essential in fixing slow performance issues because of slower RPM and seek-time .

This technique, the hard drive could signal the successful completion of the writing process more rapidly than if this had to wait until data was entirely transferred to the disk media. Write back caching is available with several top microprocessors including Intel.

Though, write back cache is a very useful technique to improve write performance, but in some cases, like hardware failure and power failure, the write back cache memory does not get flushed out to the actual drive. It may cause corruption of the data.

The completed writing operation creates several problems for journaled file systems, generally because they bank heavily on knowing whether the write operation to the drive has finished or still unfinished. Journaled file system requires knowing that the log entry has made to the disk before it allows the metadata to be written on the drive.

When metadata has written to the drive, this transaction could effectively be deleted from log file and free up log space. Thus, if the write operations fails to make it to physical drive, the ordering is desecrated and the metadata and log could be lost, which results into the file system damage.

File systems are the most important data structure of a Linux system. It is extremely important to store and organize the data files and make them easily accessible. The operating system never directly interact with the file physically. What it do is that It just takes the reference from file system table and locates to the particular file .

In case of file system corruption, the operating system could not find the reference of particular file and thus fails to access it and this results in lot of hardship . This whole scenario will resultant into failing yo access of your precious data and finally the loss of data.

The data loss will definitely affect your business with decreased revenue and market reputation, Repairing this may cost a lot of time and money. In such disastrous situations, the only thing you should think of is data recovery Linux software .

Data recovery Linux is the technique of retrieving your important data from failed hard drive. It is best possible through Linux recovery software. These software are capable in handling all of the logical data loss situations including file system corruption.

Linux Recovery and system imager

2010-01-04T21:58:00.000-08:00

It is very essential to take backup of all your data while working on your system and implementing some system wise changes so that you can perform system restore operation in case some problem occurs and recovering system is a very time consuming process, if you are working in large organization which uses hundreds of Linux operated systems. You want to run same software on different machine. If you install software separately on each machine it becomes very tough job.

To overcome the problem of this type you can take help of a utility named as System Imager. It helps in installation of Linux to lots of similar machines as it automates the whole process. It is open source software what it does is it creates images of your installation. It provides various services like software distribution, configuration and operating system updates . It can also be used for content distribution on a web sever.

To run system imager first of all create an image server that contains images of all your installation and a client (for whom you want to make image). System Imager uses "rsyn" to store image in a remote way. It provides maximum security and protection for your system in terms of data loss. Although its installation is quiet lengthy but it is very easy to use in other way it is user friendly . All versions of Linux are supported by this by this software . But is a demerit associated with it and that is fails to do recovery works .

Now what will you do in situations when your data is lost from the hard drive and system imager fails to recover the data. In this situation your data from the hard drive lost. You can recover your data with the help of Linux recovery softwares .

Linux recovery software is easy to use and provides complete Data recovery Linux solutions for all Linux operating system. It uses powerful scanning algorithm and advance technology to recover your data.

The Linux recovery software from Stellar has all these features and it recovers data from all favors of Linux like Red Hat, SUSE Etc

Linux Data Recovery Software One stop Solutions for Linux recovery Problems

2009-12-28T23:14:00.000-08:00

In the present world data plays a very important role and Computers are important part of day to day functions of companies. It helps save lot of time and other resources. A huge amount of Data can be stored in a single drive and when security of data from illegitimate users and viruses are top most priority then Linux OS comes into fray, but some times data stored is lost due to some uncontrollable reasons.

Linux is generally used in multi-user system, its processes includes writing to disk any amount of information and at any time and for successful data recovery operation it is very important not to write anything on the affected drive, if the data is overwritten then the chances of recovery becomes minimal.

Another thing that make recovery operation extremely difficult is that when undelete operations are done Linux behave quiet differently in comparison with other Operating systems .

Under Linux the procedure typically involves

1)Unmounting the file system
2)Finding the data blocks on the raw device
3)Manually copying the blocks to another partition.

All This requires a fair degree of knowledge of how the file system in Linux works. It is therefore imperative with Linux, to take a backups before starting.

When the hard disk has only one boot able partition which is 'gone', or your operating system files are missing or corrupted,the computer will not boot normally In common with all other operating systems,The same thing happens in Linux . In this situation what you have to do is to install the drive in other computer preferably running the same operating system and the data is retrieved and after doing all these thing if the file is still inaccessible, then you will need to use the data recovery software.The Linux recovery software is the best solution in this case.

This Linux recovery software should have the most powerful scanning algorithms to scan the affected hard drive thoroughly so as to recover all the data and It should be interactive and easy to use.

The Linux data recovery software from Stellar has all these features and it works on all favors of Linux like SUSE, Ubuntu, Linspire, Debian,Red Hat and this Linux recovery software is also capable of recovering lost data from hard drives partitioned on Ext4 Ext2, Ext3 and ReiserFS file systems.