I'm currently using a Seagate 320Gb USB2 drive for TimeMachine only, but I'd also like to be able to create SuperDuper bootable images and an Aperture Vault for my photos. I've got a few questions though. Am I right in thinking that you can only boot off an external firewire drive, not a USB 2 drive? If so, and I get a new firewire drive, can you boot from the FW800 port - I've read some good reviews on the Western Digital MyBook Studio Edition (the silver one with firewire 400 and 800 ports as well as USB2). Is it OK to parition the firewire drive, eg in to three of four drives - one for Time Machine, one for the SuperDuper image and the other for Aperture's Vault (and maybe a fourth partition for dmg files)? Could I still boot off it in that case? I'm hoping it is, as I don't really want to have to have three external drives for TM, Superduper and Vault. Thanks in advance.