I'm playing around with some old hard drives, and I want to install one as a slave drive onto my mom's computer. Her comp, which I will be using as the main drive, is running win98se. The slave drive that I've installed has XP Pro. I have the pin settings correct on both hard drives, and the slave drive is now readable under my computer, but not openable. When I try and open it, it gives me this error: "D:/ is not accessable. A device attached to the system is not functioning." The main drive is functioning as normal.

Does this mean that the MAIN drive has to be running XP pro as well? My dad said they they are reverse compatable, meaning if the main drive had XP and the slave had 98 that it would work. Unfortunately he thinks that it isn't forward compatable.

Can anyone clear this up for me?