Hi, I want o get a MyBook external HD with both FW and USB2 conections, mainly for backup and TV programme storage. I want to backup from the Mac using FW, and from the PC using USB2. I don't mind the drive having separate partitions for Mac and PC. (Tried a search here, but no definite answer could I find.) 1. Can I leave it plugged in to both machines? 2. Will it give me simultanous access? 3. What about simultaneous writes? Many thanks for your help!