# e2fsck /mnt/grinder.sda1.img e2fsck 1.42 (29-Nov-2011) /mnt/grinder.sda1.img: recovering journal e2fsck: Bad magic number in super-block while trying to re-open /mnt/grinder.sda1.img Signal (11) SIGSEGV si_code=SEGV_MAPERR fault addr=0x61 e2fsck[0x806fdc6] /lib/i386-linux-gnu/libc.so.6(+0x2e280)[0xb74d0280] /lib/i386-linux-gnu/libext2fs.so.2(ext2fs_mmp_stop+0x27)[0xb76aac07] e2fsck(fatal_error+0x4f)[0x80672af] e2fsck(e2fsck_run_ext3_journal+0x27e)[0x80667de] e2fsck(main+0x6ac)[0x804f21c] /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0xb74bb4d3] e2fsck[0x80515ed] # losetup -vf /mnt/grinder.sda1.img Loop device is /dev/loop1 # e2fsck /dev/loop1 e2fsck 1.42 (29-Nov-2011) e2fsck: Superblock invalid, trying backup blocks... /dev/loop1 was not cleanly unmounted, check forced. Pass 1: Checking inodes, blocks, and sizes Deleted inode 106625 has zero dtime. Fix? ... # uname -a Linux noam.redacted 2.6.32-31-generic-pae #61-Ubuntu SMP Fri Apr 8 20:00:13 UTC 2011 i686 athlon i386 GNU/Linux # lsb_release -c Codename: precise