|We got a whole forum here for people interested in 98. No need to toss it out.|
Check in device manager and see if the cdrom shows there and see if any yellow ? or ! are associated with the IDE controllers.
Right click on 'my computer' and choose 'properties', then click 'performance'. See if it's running in msdos compatibility mode.
The bios doesn't need to see the cdrom as it's ID'd by the OS. But usually if it's set to ID by AUTO in cmos/bios setup it will show on the posting screen. If you've ID'd it specifically as a cdrom then it won't show on the posting screen.