I just purchased a 1TB external harddrive to use for backing up my files, and I was wondering if there is a way to use it for all my computers I have at work. I know that you can partition it, but will it matter if I partition the HD from my MBP vs partitioning from my PowerPC vs Debian Linux computer? My PowerPC runs 10.5 and my MBP has the newest Snow Leopard. Ideally, I would also like to backup my Debian Linux computer on the same harddrive but it's okay if I can't do it with the macs. Is there a way to do allow all 3 computers to use 1 3-partitioned harddrive for backing up? All help is appreciated, thanks!