Sorry, I'm using SATA not IDE, and it's set to ACHS (or whatever) in the BIOS. I just tried all kinds of cord configurations to see if it would let me boot with that drive plugged in, but it still won't. Has nothing to do with boot priority. I had them in Sockets 0, 1, 2, 3 in different orders and if this drive is in, it won't budge past the splash screen.
Not really sure what this means, they were both working earlier this afternoon on my other board and CPU.