OpenBSD cannot mount Video CDROMS (for use with eg. CDI)

[Carsten Hammer <chammer_(_at_)_hermes_(_dot_)_hrz_(_dot_)_uni-bielefeld_(_dot_)_de>]

Hi,
I did not test NetBSD yet. Linux does it very well.
When trying to mount such a VIDEOCD OpenBSD says:

mount_cd9660: Device not configured

dmesg says:
...
cd0(ncr0:2:0): 250ns (4 Mb/sec) offset 8.
cd0(ncr0:2:0): illegal request, data = 00 00 00 00 00 00 ff ff ff ff
cd0: dos partition I/O error

This is because my /etc/fstab contains a entry for cdrom.
ciao
Carsten