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