_______________________________________
/ Grief can take care of itself; but to \
| get the full value of a joy you must  |
| have somebody to divide it with.      |
|                                       |
\ -- Mark Twain                         /
 ---------------------------------------
  \
   \
       ___
     {~._.~}
      ( Y )
     ()~*~()
     (_)-(_)
varun@varun-laptop ~ $ sudo e2fsck -c /dev/sdxX
[sudo] password for varun:
e2fsck 1.41.11 (14-Mar-2010)
e2fsck: No such file or directory while trying to open /dev/sdxX

The superblock could not be read or does not describe a correct ext2
filesystem.  If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 <device>

varun@varun-laptop ~ $ sudo e2fsck -c /dev/sda2
e2fsck 1.41.11 (14-Mar-2010)
e2fsck: Superblock invalid, trying backup blocks...
e2fsck: Bad magic number in super-block while trying to open /dev/sda2

The superblock could not be read or does not describe a correct ext2
filesystem.  If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 <device>

varun@varun-laptop ~ $ sudo e2fsck -c /dev/sda3
e2fsck 1.41.11 (14-Mar-2010)
/dev/sda3 is mounted.

WARNING!!!  The filesystem is mounted.   If you continue you ***WILL***
cause ***SEVERE*** filesystem damage.

Do you really want to continue (y/n)? yes

/dev/sda3: recovering journal
Clearing orphaned inode 786141 (uid=1000, gid=1000, mode=0100600, size=112)
Clearing orphaned inode 786123 (uid=1000, gid=1000, mode=0100600, size=371)
Clearing orphaned inode 150021 (uid=1000, gid=1000, mode=0100644, size=40960)
Clearing orphaned inode 147366 (uid=1000, gid=1000, mode=0100600, size=24576)
Checking for bad blocks (read-only test): done
/dev/sda3: Updating bad block inode.
Pass 1: Checking inodes, blocks, and sizes
Inodes that were part of a corrupted orphan linked list found.  Fix<y>?