Posts Tagged Recover Linux Data

NaggieHow to Recover Linux Data after Hard Drive Crash?

Saturday, June 5th, 2010

Is there problem with your Linux hard drive that abruptly get crashed every time when you boot your system? Or you are not able to boot your Linux computer and access data from it? The problems arise due to various reasons, causing hard drive crash.

Most commonly, the problem occurs due to missing or corrupt data structures of your Linux hard drive. Due to the same, the operating system can not locate stored files on the hard drive and access them. At this point, you need to opt for Linux data recovery solutions to get your valuable data recovered.

Symptoms that indicate the crash of a Linux hard drive: Such symptoms include the following ones:

  • Your Linux operating system-based computer does not boot up.
  • You encounter various error messages, such as “No Fixed Disk Present” or “DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER”
  • Black or blank screen after you power up your system.
  • System reboots, freezes, or stops responding frequently.
  • “Operating system not found” and “Drive not formatted” messages.

Hard drive crash can be caused by various reasons and renders entire system inaccessible. The most common reasons of Linux hard drive crash are as given below:

  • Boot sector virus or damaged MBR (Master Boot Record).
  • Corrupted or damaged file system of Linux hard drive.
  • Missing or damaged system files or operating system.
  • Virus infection.
  • Corrupt Superblock or other critical meta data structures.

In order to fix a crashed Linux hard drive and perform Data Recovery Linux, you are required to format it and reinstall operating system. This process replaces all the missing, corrupt, or damaged system resources and brings the hard drive back to life. However, it also removes all the data from hard drive and create needs of Linux recovery.

The best possible way is to recover i.e. recovery, and efficient commercial software, known as linux recovery software. They use high-end scanning techniques to carry out in-depth scan of entire Linux hard drive to extract all lost data from it.

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NaggieRecovering Linux System after Using Fsck on a Mounted System

Tuesday, May 18th, 2010

Is there any difficulty that you found while mounting your Linux system disk? The problem could be due to corruption in the file system. In order to address such issues, Linux OS provides fsck utility. It is a command-line utility, which checks integrity and consistency of the Linux file system. In addition it finds errors and fixes them, if possible. However, if you run this utility on a mounted file system, then you may not be able to access the data at all. In such cases, you should use third-party Linux data recovery software to perform data recovery Linux system.

Consider, you have accidentally run fsck on a mounted Linux OS. The inode root gets damaged and all inodes start calling similar blocks. When you try to mount the volume after fsck, the following error message is discovered:

“Mount: wrong fs type, bad option, bad superblock on /dev/hda1, missing codepage or helper program, or other error. In some cases useful info is found in syslog – try dmesg | tail or so”

When you run \dmesg\, as suggested in the error message, another error message may be displayed, that is:

“ext3-fs: corrupt root inode, run e2fsck”

And when you run e2fsck, yet another error message is displayed, that is:

“Root inode is not a directory. Clear?”

Once you press ‘Y’ and proceed with the process, the parent entry of each inode from the root directory will be deleted. The root inode will attempt to recover but if it fails, another error message will be displayed, that is:

“Cannot Allocate Root Inode”

After this error message, you will not be able to access your system.

Reason: This behavior is caused due to corruption of the file system, superblock, root inode, or any other Linux data structure. Because of this, the OS cannot locate the hard disk volumes.

Solution:

In order to sort out this problem and perform Linux data recovery, you should reformat the hard disk and reinstall the Linux operating system. However, that would invariably mean that your valuable data will be lost.

In such cases, you should use a third-party Linux recovery to recover lost data. Such tools are able to Recover Linux data safely by using fast yet sophisticated scanning algorithms.

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