Perhaps you should start playing around with your modules. During the boot
process of course no cdrom can be recognized. If your kernel is completely
modulized try to unload the floppy module (rmmod floppy) after your Linux
is up and running, change the floppy with the cd drive and load the ide cd
driver by (modprobe ide-cd). Check out dmesg for new messages...
5. CDROM PROB