Comment 3 for bug 455119

This is the output of dosfsck

sudo dosfsck -a -w -v /dev/sdb1

dosfsck 2.11 (12 Mar 2005)
dosfsck 2.11, 12 Mar 2005, FAT32, LFN
Checking we can access the last sector of the filesystem
There are differences between boot sector and its backup.
Differences: (offset:original/backup)
  71:4c/4e, 72:45/4f, 74:56/4e, 75:52/41, 76:41/4d, 77:49/45, 79:4d/20
  , 80:4f/20, 81:55/20
  Not automatically fixing this.
Boot sector contents:
System ID "*'1(`IHC"
Media byte 0xf8 (hard disk)
       512 bytes per logical sector
     32768 bytes per cluster
        32 reserved sectors
First FAT starts at byte 16384 (sector 32)
         2 FATs, 32 bit entries
  39066624 bytes per FAT (= 76302 sectors)
Root directory start at cluster 2 (arbitrary size)
Data area starts at byte 78149632 (sector 152636)
   9765385 data clusters (319992135680 bytes)
63 sectors/track, 255 heads
        63 hidden sectors
 625137282 sectors total