Corrupcion en una ext3

Mensaje de error

The superblock could not be read or doesnt 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 u might try running e2fsck with an alternate superblock.

Solucion

Haga un backup por que puede perder esa particion
Intentar con otro superblock: e2fsck -b 8193
Mas superblocks con los cuales intentar: mke2fs -n
Después de fracasar con las copias del superblock, mke2fs -S

 "-S     Write  superblock and group descriptors only.  This
         is useful if  all  of  the  superblock  and  backup
         superblocks  are corrupted, and a last-ditch recov?
         ery method is desired.  It causes mke2fs to  reini?
         tialize the superblock and group descriptors, while
         not touching the inode  table  and  the  block  and
         inode  bitmaps.   The  e2fsck program should be run
         immediately after this option is used, and there is
         no guarantee that any data will be salvageable.  It
         is  critical  to  specify  the  correct  filesystem
         blocksize  when  using  this option, or there is no
         chance of recovery."