OpenBSD mounting

[Master of Reality]

I did
mount -t iso9660 /dev/cd0 /mnt/cdrom
after creating /mnt/cdrom
it gave me:
mount: no helper program found for iso9660: No such file or directory

then i tried
# mount /dev/cd0 /mnt/cdrom
mount_ffs: /dev/cd0 on /mnt/cdrom: No such file or directory.

What the hell is wrong?

[TheQuirk]

# mount -a -t nonfs,mfs

[Master of Reality]

that wont work because i when i edited /etc/fstab to include cdrom i put iso9660 when it should be cd9660 (for OpenBSD) so i just did:
mount -t cd9660 -r /dev/cd0a /mnt/cdrom

and it worked

[TheQuirk]

# mount -a -t nonfs,mfs
 mounts *every* file system except NFS and MFS.

[Master of Reality]

...it mounts every file system in fstab except NFS and mfs

[TheQuirk]

it wasn't there in the deafult install? that's odd.