|"this is a ide drive and cd rom"|
Were these drives seen at one time or did you just install them? It sounds like you either have a problem with the cables or you have the master/slave jumpers setup incorrectly.
If they are on the same cable, the HDD should be jumpered as master & the CD-ROM jumpered as slave. If they are alone on separate cables, they should both be jumpered as master. If the HDD is a Western Digital, there are different jumper settings for master (single) & master (with slave).