W2K OS on an IBM SCSI install is weird.

I have been trying to install Win 2K on an older IBM Intellistation and everything works well until I remove the install disk from the CDRom. Then the PC will not boot. It appears that although I have tried to install the SCSI drivers during the install, either the OS has not recognized them or somehow I have not installed them correctly. I have checked the IBM site for updated drivers and tried using the driver disk I have for the 7800 Adaptec family of drivers, but each time I complete the install it will no longer boot once I remove the OS install CD. As long as I keep the CD in the drive I can run this PC fine!!? I’ve never seen this behavior, so maybe someone with strong SCSI experience can help me? Thanks.