I have recently purchased a system that has an unsupported IDE CD-ROM drive.
Many folks seem intimidated by the installation process.
This assumes that you are setting up a dual-boot system. No matter what I try, I can't get the fault-tolerant boot floppy to work. Reboot the system and enable the BIOS on the secondary controller. When you reboot, the boot process will read the controller BIOS and locate the correct drive. Move drive 2 to controller 1.