IBM ThinkPad 760EL-Boot Sequence Problem

I have an IBM – thinkpad 760EL Laptop computer. Model 9547. Completed FDISK. Primary partition C is active at 100% utilization. Fat 32. Reformatted C. I have one bay which is used to swap the FDD and CDROM. I can boot with WIN98 floppy boot disk. Problem is Once I remove the FDD and insert the CDROM, I am unable to load WIN98 O/S. No drivers for the swappable CDROM load from the A: drive at boot. The Bios does not contain a boot sequence option for CDROM (Bummer…..). Can anyone make suggestions on how I can load the O/S which is on CD? Any suggestion is appreciated.