Recover corrupted data from Superblock of Linux system

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.