My experience is that USB 2.0 is slower than Firewire 400 when large amounts of data are being transferred. Jens On Dec 18, 2008, at 8:45 AM, Mark Des Cotes wrote: > > On 18-Dec-08, at 2:57 AM, John Baltutis wrote: > >> On 12/17/08, Mark Des Cotes <lists at marksmandesign.ca> wrote: >>> >>> I know I can't boot from a USB2 external drive. If I make a clone of >>> my HD to the USB2 external drive using CCC, could I, if the need >>> ever >>> arises, take the drive out of it's enclosure put it in a FireWire >>> enclosure and boot from it? Or do I have to make the clone directly >>> to a FW drive? >> >> Why go through all of that when you can just pop the HD into a FW >> enclosure and >> leave it there. USB is significantly slower than FireWire. > > I have a iMac G5 and it only has FW 400 so USB2 is faster (at least > I think it is). I already have a USB2 Dual enclosure with a RAID1 > setup. The drive is partitioned into two parts the first of which > I've cloned my HD to. I'm just curious if the cloned HD would boot > my iMac G5 if I removed the drive from the USB2 enclosure and put it > in a FW enclosure. It's only for a worst case scenario. Should my HD > ever fail I can run down to my local computer store and purchase a > FW enclosure for the drive. Jens Selvig ...Lost in Montana...