I guess I don't see what that accomplishes: why not just make the safety clone on the external drive? The way you suggest, you're moving all your files to the external, then moving the OS stuff back. (And, at least under Panther, putting your user files on an external FireWire drive can cause trouble, because the FireWire drive -- unhacked -- won't mount early enough so your Home directory can be found.)
So, as I said, why not just make the safety clone to the external, and play around there?
__________________
--Dave Nanian
|