[Mandriva 2009.1] Formatage disquette 3"5

Bonjour,

Je rencontre des problèmes lors du formatage de disquette sous Linux Mandriva 2009.1.

--> Taille des disquettes 3"5 : 720 Ko & 1,44 MB

Le point de montage de la disquette est : /media/floppy/

1) MKFS
# mkfs -t vfat /dev/fd0
mkfs.vfat 2.11 (12 Mar 2005)
mkfs.vfat: failed whilst writing FAT

2) FDFORMAT
# fdformat /dev/fd0
Double-côtés, 80 pistes, 13 secteurs/piste. Capacité totale 1040 kB.
Formattage en cours ...
ioctl(FDFMTTRK): Argument invalide

Impossible de formater la disquette 720 KO ?

3) KFloppy :

kfloppy
QPainter::end: Painter ended with 2 saved states
kdeinit4: preparing to launch /usr/lib/kde4/libexec/klauncher
klauncher(11093) kdemain: No DBUS session-bus found. Check if you have started the DBUS server.
kdeinit4: Communication error with launcher. Exiting!
kfloppy(11077): Couldn't start knotify from knotify4.desktop: "Impossible d'atteindre KLauncher via D-Bus, erreur lors de l'appel de start_service_by_desktop_path :
Not connected to D-Bus server
"

QPainter::end: Painter ended with 2 saved states
QPainter::end: Painter ended with 2 saved states
QPainter::end: Painter ended with 2 saved states
QPainter::end: Painter ended with 2 saved states
QPainter::end: Painter ended with 2 saved states
QPainter::end: Painter ended with 2 saved states
QPainter::end: Painter ended with 2 saved states

Existe-t-il des commandes pour les supports de ce type ?