One likely cause of your CD/DVD not being found is that the
appropriate module has not bee loaded. Try loading
ide-scsi to see if that helps!
If that works you may want to add ide-scsi to
/etc/modules so it will be loaded on reboot.
Otherwise, to make use of a CD-ROM device you need to know what device
it is mapped to. Let's assume it is /dev/hde (but look
through the output of the dmesg command to see which it is).
If the device /dev/hde does not exist (for modern versions of
Debian it usually does exist as the devices where identified at boot)
you will need to create it with MAKEDEV as root:
# cd /dev
# ./MAKEDEV hde
As a common convenience /dev/cdrom points to the physical
device /dev/hde using a symbolic link:
You can then mount any data CD-ROM:
# mount /dev/cdrom /media/cdrom
# umount /media/cdrom
If users can not mount the CD-ROM device then they probably don't have
the right permissions. To allow general access to the CD-ROM edit
/etc/fstab to add the following line.
/dev/cdrom /media/cdrom auto defaults,noauto,users,ro,nohide 0 0