Data recovery from corrupted ext2/ext3 filesystem having bad superblock

NOTE : I do not take any responsibilty of any damage to your disk or data while trying my method or any of my commands stated in this article. YOU HAVE BEEN WARNED!!!

 

1. Let's say our corrupted filesystem is at partition /dev/sdb3 of ext3 type. We will mount the partition under /mnt/sdb3, so create the directory structure if you dont have it already.

    
   
   Also, create the following directory structure to keep backup data.

   mkdir /sdb3-backup
   mkdir /sdb3-backup/image
   mkdir /sdb3-backup/copy

   Note that ext3 filesystem is same as ext2, with only addition of journal. So our entire technique will use ext2 filesystem if even our corrupted filesystem is ext3 type. Because our aim is to recover data not journal recovery (which is unrecoverable as far as I know). So be carefull while you issue any of my commands, unless explicitly told dont add any ext3 filesystem type in any of our command. Use all my command as it is written below.