I have an iBook G4 running 10.4.11. I have been having trouble starting it up and disk utility says my hard drive is failing. I just bought a Maxtor external firewire hard drive. I don't understand that much about computers and some of the discussions I've read about partitions etc are totally confusing to me. Can someone tell me in easy terms, step by step, what I need to do to be able to boot my laptop from my external drive? If (or when) my hard drive dies on my laptop, will I be okay just running my computer from the external drive?