# fsck.vfat /dev/sdc1
dosfsck 2.11, 12 Mar 2005, FAT32, LFN
There are differences between boot sector and its backup.
Differences: (offset:original/backup)
  0:eb/00, 2:90/00, 3:4d/00, 4:53/00, 5:57/00, 6:49/00, 7:4e/00, 8:34/00
  , 9:2e/00, 10:31/00, 12:02/00, 13:20/00, 14:04/00, 16:02/00, 21:f8/00
  , 24:10/00, 28:2e/00, 32:d2/00, 33:6f/00, 34:3b/00, 36:b7/00, 37:03/00
  , 40:80/00, 44:02/00, 48:01/00, 50:02/00, 66:29/00, 67:be/00, 68:ba/00
  , 69:be/00, 70:ba/00, 71:4e/00, 72:4f/00, 73:20/00, 74:4e/00, 75:41/00
  , 76:4d/00, 77:45/00, 78:20/00, 79:20/00, 80:20/00, 81:20/00, 82:46/00
  , 83:41/00, 84:54/00, 85:20/00, 86:20/00, 87:20/00, 88:20/00, 89:20/00
  , 510:55/00, 511:aa/00
1) Copy original to backup
2) Copy backup to original
3) No action
? 2
FSINFO sector has bad magic number(s):
  Offset 0: 0x00000000 != expected 0x41615252
  Offset 484: 0x00000000 != expected 0x61417272
  Offset 510: 0x0000 != expected 0xaa55
1) Correct
2) Don't correct (FSINFO invalid then)
? 1
Invalid disk format in boot sector.