Sunday, February 27, 2011

How to recover linux files after corruption

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.

Friday, February 25, 2011

Major Reasons for Data loss In Linux


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.

Thursday, February 24, 2011

How to recover ext4 files in Linux


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 .

Tuesday, February 22, 2011

Fsck error and data loss in linux

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.

Monday, February 14, 2011

Linux data recovery software to prevent data loss

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.