This is quiet a simple question but is every Hard drives compatible to run as master and slave? I've ran 2 hard drives before 1 being a 37 GB 5400 RPM, and the other being a 6gb 5400 RPM. Now I have a 40 GB 7200RPM as master and a 20GB 5400 RPM for slave, and I've set the jumper settings correctly. When I try to load it up, I get a boot disk failure. Am I missing something here? By the way the 20GB already has win98 but I need to transfer some files before I reformat it. 
P.S - Does each power cables have to be plug in to specific hardwares? Such as P4 have to be plugged into the Master HD?
P.S - Does each power cables have to be plug in to specific hardwares? Such as P4 have to be plugged into the Master HD?