On 12/18/08 1:57 AM, John Baltutis wrote: > 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. Further, there is evidence that PowerPC Macs can also boot from USB external hard disks.