Recovering Linux File System After Superblock Corruption Article

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Recovering Linux file system after superblock corruption

One such metadata structure is the superblock, which is very essential for the health of the Linux system.

Author: Allen Sood

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A file system cannot be mounted if you are not able to access the superblock. This case arises if the superblock is corrupted. Corruption can happen because of various reasons such as virus infections, file system corruption, human errors, etc. In such cases, you should consider taking appropriate measures to perform data recovery of Linux system.

Consider a scenario wherein you have a Linux system having ext3 partition. When you try to access the partition, you are not able to do so. An error message is displayed, that is:

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

Cause:
The cause of this error message is that the superblock has corrupted because of the aforementioned reasons.

Resolution:
You can restore the primary superblock from the various backup copies that the Linux system maintains for such situations. To do this, you need to:

• Find out superblock location for /dev/sda2
• Check and repair Linux file system using alternate superblock # xyz, where xyz is the location of alternate superblock.
• Mount file system using mount command viz, # mount /dev/sda2 /mnt
• Try to browse and access the file system.

However, if you still are unable to solve the issue, then you should use a third-party Data Recovery Linux software that will enable you to perform Linux Recovery. Such read-only tools are highly interactive and do not overwrite the original data while scanning the damaged area.

Stellar Phoenix Linux Data Recovery software is an efficient tool that enables you to perform Linux data recovery for various file system volumes such as ext2, ext3, ext4, FAT12, FAT16, and FAT32. It is capable of recovering data from various types of hard drives such as SCSI, SATA, EIDE, and IDE. It is specifically designed to support different Linux distributions such as Red Hat, SUSE, Debian, Caldera, Mandrake, Sorcerer, TurboLinux, Slackware, Gentoo etc. It is compatible with Windows 7, Vista, Server 2003, XP, and 2000.

About Author

Allen Sood a student of Mass Communication doing research on Linux Data Recovery software . He is also a freelancer for http://www.data-recovery-linux.com/

Article Source: http://www.1888articles.com/author-allen-sood-27783.html

Recovering Linux file system after superblock corruption