Thank you all for the responses. Before I did anything, I copied all my files to CD. That amounted to 6CDs(mostly photographs) but I was hoping to get away with leaving them on the old hard disk(New slave) and using it as a "photograph store" but it looks as though I must reformat the old disk and have to copy them back onto it. Must I reformat the disk?
The new master(with XP) was formatted to Fat32. Does this mean that formatting the old one must be Fat 32 also? If I wanted to have a dual boot system would that change things?