Não é possível montar o FAT32 USB (tipo fs errado)

Question

Estou tentando montar um dispositivo USB formatado com FAT32. Depois que a unidade não foi montada automaticamente, criei um ponto de montagem /media/external e tentei o seguinte para montá-lo:

$sudo mount /dev/sdb1 /media/external -t vfat
mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
       missing codepage or helper program, or other error
       In some cases usefulinfo is syslog - try
       dmesg | tail or so

Se eu executar o dmesg | cauda eu recebo:

$dmesg | tail
[ 4237.953934] FAT-fs (sdb1): Can't find a valid FAT filesystem
[ 4265.417449] FAT-fs (sdb1): utf8 is not a recomended IO charset for FAT filesystems, filesystem will be case sensitive!
[ 4265.417934] FAT-fs (sdb1): bogus number of reserved sectors
[ 4265.417938] FAT-fs (sdb1): Can't find a valid FAT filesystem
[ 4350.815852] FAT-fs (sdb1): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
[ 4350.816342] FAT-fs (sdb1): bogus number of reserved sectors
[ 4350.816346] FAT-fs (sdb1): Can't find a valid FAT filesystem
[ 6552.478424] FAT-fs (sdb1): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
[ 6552.478904] FAT-fs (sdb1): bogus number of reserved sectors
[ 6552.478907] FAT-fs (sdb1): Can't find a valid FAT filesystem

O seguinte é informação sobre minha movimentação do usb:

$sudo fdisk -l
(a bunch of info about my system)
   Device Boot     Start     End     Blocks     Id     System
/dev/sdb1           8064  15248831  7620384      c     W95 FAT32 (LBA)

$sudo file -s /dev/sdb1
/dev/sdb1: sticky data

$sudo strings -a /dev/sdb1 | head
DEBIAN 7_8_
LDLINUX SYS'
README~1HTM
README~2HTM
README~1TXT
README~1SOU
README  TXT
DISK~1
AUTORUN INF
CSS

$sudo hexdump -C /dev/sdb1 | head -n20
00000000  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
0088fc00  f8 ff ff 0f ff ff ff ff  ff ff ff 0f 04 00 00 00  |................|
0088fc10  05 00 00 00 06 00 00 00  07 00 00 00 08 00 00 00  |................|
0088fc20  09 00 00 00 0a 00 00 00  0b 00 00 00 0c 00 00 00  |................|
0088fc30  ff ff ff 0f 0e 00 00 00  0f 00 00 00 ff ff ff 0f  |................|
0088fc40  11 00 00 00 12 00 00 00  13 00 00 00 14 00 00 00  |................|
0088fc50  15 00 00 00 16 00 00 00  17 00 00 00 18 00 00 00  |................|
0088fc60  19 00 00 00 1a 00 00 00  1b 00 00 00 1c 00 00 00  |................|
0088fc70  1d 00 00 00 1e 00 00 00  1f 00 00 00 20 00 00 00  |............ ...| 
0088fc80  21 00 00 00 22 00 00 00  23 00 00 00 24 00 00 00  |!..."...#...$...|
0088fc90  25 00 00 00 26 00 00 00  27 00 00 00 28 00 00 00  |%...&...'...(...|
0088fca0  29 00 00 00 2a 00 00 00  2b 00 00 00 2c 00 00 00  |)...*...+...,...|
0088fcb0  2d 00 00 00 2e 00 00 00  2f 00 00 00 30 00 00 00  |-......./...0...|
0088fcc0  31 00 00 00 32 00 00 00  33 00 00 00 34 00 00 00  |1...2...3...4...|
0088fcd0  35 00 00 00 36 00 00 00  37 00 00 00 38 00 00 00  |5...6...7...8...|
0088fce0  39 00 00 00 3a 00 00 00  3b 00 00 00 3c 00 00 00  |9...:...;...<...|
0088fcf0  ff ff ff 0f 3e 00 00 00  3f 00 00 00 40 00 00 00  |....>...?...@...|
0088fd00  41 00 00 00 42 00 00 00  43 00 00 00 44 00 00 00  |A...B...C...D...|
0088fd10  45 00 00 00 46 00 00 00  47 00 00 00 48 00 00 00  |E...F...G...H...|