I'm thinking of making the jump and making my first Apple computer purchase. Time machine will be a welcome native backup solution, especially since I can do it over the network automatically. However, I've read that Time Machine naturally requires HFS+ formatted disks. But I will still have my Win7 laptop for gaming purposes, and of course that requires NTFS or FAT32 for writability. My question: Can I just take a TM compatible external drive, split it into two partitions, and then specify that each computer backup onto its own partition with its own file system? Has anyone done that before? Just curious and wanted to get some Feedback, so thank you in advance.