It may not be that hard drive after all. It may be that neither the Mac nor Windows could read that 120 GB HD because the last format left a Linux file system on it. I was getting similar issues with the 12 GB HD that I was playing with yesterday. Something else came up, though, and I remembered it from the last time I reinstalled XP on my editor...
I got a Cyclic Redundency Error this time. When I try to install XP on my editor, if it's in my DVD-ROM drive, it won't work, but if I put it in the much faster DVD burner, it purrs like a kitten. I may be buying a DVD-ROM drive today.