On 12/17/08, Jeff Carruthers <jeff at carruthers.com> wrote, among other things: > > Mark: if you have a MacIntel machine, you can boot from a USB2 drive. > The drive has to be formatted with a GUID partition. Not so. You only need the GUID partitioning scheme if you were using an ICBM (Intel-chip-based Mac) to install the OS onto the HD. You can clone an ICBM to either GUID or APM partitioning scheme HDs.