expect.1 revision 65f0aab98b20b5994a726ab90d355248bcddfffd 
1../e2fsck/e2fsck: Superblock invalid, trying backup blocks...
2../e2fsck/e2fsck: The ext2 superblock is corrupt while trying to open ./test.img
3
4The superblock could not be read or does not describe a correct ext2
5filesystem.  If the device is valid and it really contains an ext2
6filesystem (and not swap or ufs or something else), then the superblock
7is corrupt, and you might try running e2fsck with an alternate superblock:
8    e2fsck -b 8193 <device>
9
10Exit status is 8
11