As a workaround, I found out that mount option "nobarrier" helps with the problem, I can write on the disk (even if it's not a perfect solution). /dev/sdc1 /mnt/lacie auto rw,user,noauto,nobarrier 0 0 Cordialement / Best regards. -- Sébastien Helleu web: flashtux.org / weechat.org mail: flashcode@flashtux.org irc: FlashCode @ irc.freenode.net xmpp: flashcode@jabber.fr