its not an ide, its parallel ATA. i only have ONE optical drive connected to the computer. i possiby thought about reinstalling the BIOS, and maybe then it would catch it. i cannot test the drives on another computer, as all my other computers are IDE. and, they are not the slim-laptop style cd drives. there are also no jumper settings on the drive, nor the HDD either. i understand your thinking its a jumper problem, because 90% of the time it is, but in this case, it doesn't have any that are settable.