The scheme defines the overall organization of the drive, which can feel pretty obscure, because you rarely need to change it. You can select among GUID Partition Map, Master Boot Partition ...

the earlier Apple partition scheme, which is used for disks that will boot up a PowerPC machine, and the GUID partition scheme, which is used for disks that will boot up an Intel machine.

GUID_partition_scheme *149.1 GB disk0<BR> 1: EFI 200.0 MB disk0s1<BR> 2: Apple_HFS data 74.4 GB disk0s2<BR> 3: Apple_HFS system 74.2 GB disk0s3<BR><BR>So does anyone know how I can display the ...

I'm still not sure how much I want to do with Windows, but I think I want something half and half, or a Debian majority. <BR><BR>How would you layout these drives, and what partition would go where?

dev/disk4 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme ... creates the partition map and activates it.