I just went out and bought a new harddrive, and I can not set it as the master. I can set it to Single/Master, Master with slave, or the Cable Select settings and it will show up as master when on an IDE chain by itself. When I try to put another HD on as slave only the slave HD shows up during boot or in BIOS when it checks for IDE devices.
I then tried setting each HD as a master on different chains and setting each RW drive as the slave, but then the new hard drive shows up as a master without a slave.
When I set one RW drive as the slave and the other as the master on the 2nd IDE chain, and I set the old drive as the master and the new drive as the slave on the 1St IDE chain, everything is recognized.
I did notice that the old drive did only have 4 jumper settings as opposed to 5,but now I figure that doesn't matter since the new drive won't work with a CD drive on the chain with it either.