“Couldn't mount…” Error Message while mounting Linux Operating System
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Superblock is the most significant component of a Linux volume that restrains critical information about files and folders in file systems as ext2, ext3 and more. It enables us to mount and access the file systems. Superblock corruption primarily occurs due to metadata structure damage, file system corruption, unexpected system shutdown, malicious software like virus and more.
In most cases of superblock corruption, the volume becomes unmountable and the data becomes inaccessible. In such situations, you can restore the lost data using an updated backup. However, if you have not maintained any backup or it is not up-to-date, then you need to recover your data by using advanced Linux Data Recovery tools.
Consider a practical scenario, when you attempt to boot your Linux system, you encounter the below error message:
“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”
After running dmesg tail, you encounter the below error message:
“Couldn't mount because of unsupported optional features (2000200)”
After the above error message appears, the system becomes unmountable and data stored on the hard drive volume becomes inaccessible. Additionally, you encounter the same error message each time you attempt to boot your system.
Cause:
The main reason behind occurrence of the above error message is superblock corruption.
Resolution:
To resolve the problem and access all inaccessible data, you need to follow these steps:
1. Boot your system by using an alternate block by running the below command:
e2fsck -b 98304 /dev/hdb8
2. Once the file system gets restored to the point at which it can be mounted, you need to fix it by using this command:
e2fsck -c /dev/hda8
-c parameter checks for the bad blocks
However, if the above steps are not able to resolve the issue, you should consider reinstalling Linux. A clean Linux reinstall will erase all existing data from the selected volume. For complete recovery of lost data, you should use efficient Linux Data Recovery software.
Such Linux Recovery tools incorporate effective scanning algorithms to recover all your lost data. These recovery tools provide highly graphical user interface that makes them easily understandable without prior technical knowledge. These tools recover data post situations like superblock corruption, group descriptor faults, inode table damage and more.
Stellar Phoenix Linux Data Recovery is the foremost Linux Recovery tool. It supports recovery from Ext2, Ext3 and ReiserFS file system based Linux volumes. This Data Recovery Linux tool gets installed on Windows (Vista, XP, 2003 and 2000) and the affected Linux drive is connected as slave.
Allen a student of Mass Communication doing research on data recovery linux software. He is also a freelancer for http://www.stellarinfo.com
Article Source: ArticlesBase.com - “Couldn't mount…” Error Message while mounting Linux Operating System