Love TimeMachine. Recently I had to go back 2 weeks and recover from a problem. Worked great. Mistake: When I started TimeMachine I used an external disk that was far too small. I have bought a 500GB Firewire disk and want to switch over . . . . but I don't want to lose the information on the smaller hard drive with which I started out. Is there a way to safely move the backup data from the original small HD to the new larger HD? Can I just copy it over and turn the small disk off? Will TimeMachine recognize it on the new disk? Any thoughts about where I might find the answer? Anyone tried this?