Ok I will try it. Another dumb question: how do you tell if it is USB or Firewire? Is it just the type of "plug in?"
and what is ASP? Sorry...
If the plug looks like the one on your mouse, then it is usb, and it will not work. Firewire is flat on 3 sides and rounded on the other.
It's APS. It's how the drive has to be formatted for a PPC mac to boot from.
Here is something that I copied from somewhere. These instructions are for an intel mac, so where it says GUID. you need to chose APS
You can have as many OS X installations on as many hard drives/partitions as you like, and you can use the "Startup Disk" system preference to switch between all of them. Basically, all you need to do is install Leopard on your external drive. To install Leopard, simply boot from the Leopard Install DVD and choose your FireWire drive as the target for installation.
When you install Leopard use the menu item to find "Disk Utility" (before you go to far during the install process). . Launch it and let it find the Firewire hard disk. Then highlight that drive and in the right hand pane select 'Partition". In the Partition pane select 1 Partition and then look near the bottom and select 'Options'. A drop down will come to format the drive to make os install on either PPC Mac or Intel Mac (it will tell which one you want). You must do this to make the drive a bootable drive to install OS X on.
IMPORTANT - Format External Disk with GUID partition type
If your MacBook Pro is Intel based, you MUST format the external drive with the GUID partition scheme before cloning to it if you ever want to boot an Intel Mac from that external drive. If the external drive is formatted for PPC booting (Apple Partition Scheme), the contents of the clone can be cloned back and forth without issue, but can't be booted from the external disk.
