Deepak Shrestha wrote: > by the way I have mounted these drive with write permission to users > in fstab: > ==================== > /dev/hdd1 /mnt/common vfat rw,defaults,umask=0000 0 0 > /dev/hdb1 /mnt/gameiso ntfs ro,defaults,umask=0222 0 0 > ==================== > > Another clue I found is: > ================== > I have some movies stored in my /mnt/common. It happens (usually but > not sure that it happens everytime) when I play these movies with > mplayer. Hmm. Could you do a ls -lart /var/log just after the mount has gone away. That will show you if there have been any log files that have been modified recently. Then please do a tail -20 /var/log/messages (and similarly for any other files that have been modified recently). At a guess, I'd say that there's either something wrong with the drive, something wrong with the cable, or possibly with the motherboard. Out of interest, what are /dev/hda and /dev/hdc? Is there anything else on those two IDE channels? Incidentally, you don't need the "defaults" in /etc/fstab, as long as there's something else there. (You need *something* for the mount options -- "defaults" is just a "do nothing" word to put there if you haven't got any other mount options). Hope this helps, James. -- E-mail: james@ | "Minis on the other hand are just the wrong size. Too aprilcottage.co.uk | small to work on directly and too large to put upside | down on the workbench." | -- stevo at madcelt.org