Clé usb

Salut,

Essaie avec :

sudo mount -t vfat /dev/sdb1 /media/usb/ 

merci pour vos réposnes!
voici
sudo mount -t vfat /dev/sdb1 /media/usb/
mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
mon fichier fstab :

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# / was on /dev/sda1 during installation
UUID=d944a693-2b0c-4244-aae1-9105062ef393 / ext3 errors=remount-ro 0 1

# /dev/sda6 /home ext3 defaults 0 2
UUID=783d7b23-12e9-43ed-bece-978060d1f1dc /home ext3 defaults 0 2

# swap was on /dev/sda5 during installation
UUID=050ea691-5a7f-46d2-a7c1-a0408e9ee373 none swap sw 0 0
/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto 0 0

# /dev/sda8 /mnt/sda8 ext3 defaults 0 2
UUID=20d32261-1ccc-4007-ad05-a6d4c1660502 /mnt/sda8 ext3 defaults0 2

je ne comprends pas ce qu'il se passe...

les dermières lignes de dmesg sont :
[24690.107614] FAT: utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
[24690.107984] FAT: bogus number of reserved sectors
[24690.107986] VFS: Can't find a valid FAT filesystem on dev sdb1.
[25264.930105] FAT: utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
[25264.930587] FAT: bogus number of reserved sectors
[25264.930594] VFS: Can't find a valid FAT filesystem on dev sdb1.

ah pas de chance décidément ...
francoise@debian:~$ sudo mount -tmsdos /dev/sdb1 /media/usb/
[sudo] password for francoise:
mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

francoise@debian:~$ sudo mount -t vfat -o utf8 /dev/sdb1 /media/usb/
mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

nouvelles lignes dmesg :
[26234.234098] FAT: utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
[26234.234582] FAT: bogus number of reserved sectors
[26234.234588] VFS: Can't find a valid FAT filesystem on dev sdb1.
[26246.110111] FAT: utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
[26246.110601] FAT: bogus number of reserved sectors
[26246.110608] VFS: Can't find a valid FAT filesystem on dev sdb1.

comme ceci?
sudo mount -t vfat -o utf8 /dev/sdb /media/usb/
[sudo] password for francoise:
mount: wrong fs type, bad option, bad superblock on /dev/sdb,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

merci

je l'ai testée sur Ubuntu, pareil, même défaut...et là je viens de voir que sous windows xp la clé est reconnue mais impossible d'ouvrir non plus...
cette clé contient des fichiers importants quand même, je ne l'ai pas formatée.
Si je peux le faire après avoir récupéré ces données, oui pourquoi pas?
c'est bizarre non?