GUID or Apple Partition Map quandary

[Geo]

My other question is about formatting the external drive.

As my PPC laptop is likely to be replaced soon with an Intel laptop (but the desktop remaining as a PPC), should I format the external firewire drive using GUID or Apple Partition Map?

There seems to be conflicting opinion as to whether a PPC can be booted from an SD clone under GUID or the Intel from Apple Partition Map.

Any advice gratefully received.

[dnanian]

Power PC drives need to be partitioned as Apple Partition Map. Once you transition to Intel, you can repartition with GUID.