Merci a toi je suis en train de télécharger l’image disque je vais faire un essai sur une partition libre 
EDIT :
Bon je crois que ma clé USB ne fonctionne plus !!!
J’essaie de faire une clé bootable pour OpenELEC http://wiki.openelec.tv/index.php/HOW-TO:Installing_OpenELEC/Creating_The_Install_Key depuis une bonne heure et demie, et je crois que le problème viens de la clé.
[code]root@so6debian:/home/so6/Téléchargements/OpenELEC-Generic.x86_64-4.2.1# ./create_installstick /dev/sdb1
#########################################################
OpenELEC LIVE Installer
#########################################################
This will wipe any data off your chosen drive
Please read the instructions and use very carefully…
#########################################################
checking MD5 sum…
target/KERNEL: OK
target/SYSTEM: OK
please wait…
writing new disklabel on /dev/sdb1 (removing all partitions)…
1024+0 enregistrements lus
1024+0 enregistrements écrits
4194304 octets (4,2 MB) copiés, 0,0146057 s, 287 MB/s
Error: Partition(s) 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 on /dev/sdb1 have been written, but we have been unable to inform the kernel of the change, probably because it/they are in use. As a result, the old partition(s) will remain in use. You should reboot now before making further changes.
creating a partition on /dev/sdb1…
Error: Error informing the kernel about modifications to partition /dev/sdb1p1 – Argument invalide. This means Linux won’t know about any changes you made to /dev/sdb1p1 until you reboot – so you shouldn’t mount it or use it in any way before rebooting.
Error: Failed to add partition 1 (Argument invalide)
marking partition active…
Error: Error informing the kernel about modifications to partition /dev/sdb1p1 – Argument invalide. This means Linux won’t know about any changes you made to /dev/sdb1p1 until you reboot – so you shouldn’t mount it or use it in any way before rebooting.
Error: Failed to add partition 1 (Argument invalide)
telling kernel we have a new partition table…
Error: Error informing the kernel about modifications to partition /dev/sdb1p1 – Argument invalide. This means Linux won’t know about any changes you made to /dev/sdb1p1 until you reboot – so you shouldn’t mount it or use it in any way before rebooting.
Error: Failed to add partition 1 (Argument invalide)
creating filesystem on /dev/sdb1p1…
mkfs.vfat 3.0.13 (30 Jun 2012)
/dev/sdb1p1: No such file or directory
installing syslinux to /dev/sdb1p1…
syslinux: /dev/sdb1p1: No such file or directory
mounting partition /dev/sdb1p1 on /tmp/tmp.orBnBlk0kP…
mount : le périphérique spécial /dev/sdb1p1 n’existe pas
finding partition UUID for /dev/sdb1p1 …
creating bootloader configuration…
copying files to /dev/sdb1p1…
syncing disk…
unmounting partition /dev/sdb1p1…
umount : /dev/sdb1p1 : introuvable
writing mbr…
syncing disk…
cleaning tempdir…
rmdir: échec de suppression de « /tmp/tmp.orBnBlk0kP »: Le dossier n’est pas vide
…installation finished
root@so6debian:/home/so6/Téléchargements/OpenELEC-Generic.x86_64-4.2.1#[/code]
J’ai essayé en EXT3, EXT4, NTFS et enfin FAT32 rien n’y fait 
Et je ne suis pas capable d’interpréter les erreurs (multiples). 