On Feb 1, 2011, at 12:35 PM, Josh Koffman wrote:

> Hi all. I have an external portable hard drive that I'd like to setup
> two partitions on. One will be used backup a Mac computer using a disk
> cloner. The other partition will be for general storage and exchange
> with Windows based computers. If I set it up so that the drive uses a
> GUID Partition Map (instead of Master Boot Record), then a Mac based
> computer would actually be able to boot off the clone partition. If I
> use MBR, then that isn't possible. What I'm not sure about is if a
> Windows based computer would be able to see a FAT partition if it
> exists on a GUID drive.
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> Any thoughts?
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> Thanks!
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> Josh

http://en.wikipedia.org/wiki/GUID_Partition_Table#OS_support_of_GPT

http://refit.sourceforge.net/myths/

In short, you need a MBR for viable Win32 compatibility.  Your Mac will gla=
dly boot from a MBR, however, so sticking with MBR won't hurt.  The OS X in=
staller just refuses to install on a drive without GPT.

- Nate


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