I am running pmax 1.4.1 I have a DEC RRD40 cdrom It is set to scsi id 4 ( confirmed at start-up and via dmesg ). I issue: mount -rt cd9660 /dev/rz4c /CDROM and the system returns: mount_cd9660: : Invalid argument I have a plain vanilla sony cdrom that mounts correctly with the same command ( scsi id 2 ). Any ideas?