mount /dev/hdc or cdrom

Hello ! Before all of my roundtrips within the adsl setting up of a modem, I had my filesystem ext2. Now I mounted it reiserfs. No big problem apart from a kernel panic resolved via the SuSE documentation on the web. But now, if i try to mount a cd, i am required to give the filesystem data. Thisdidn't occur before and in my fstab /dev/hdc is referenced with "auto" A tip ? Tks in advance Jacek