Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

majorp

macrumors 6502
Original poster
Nov 28, 2005
314
0
UK !!!
I formatted my external on my macbook before i returned it. I partitioned and formatted as guid?! <<:confused:

When i try to read it on my brothers powerbook i cannot seem to mount it. It says it is non mountable and gives me the option to initialize.

Any ideas

Thanks

edit, by the way im not trying to boot, just read.
 
Drives formatted with the new Intel Mac partitioning scheme are apparently unbootable by PPC Macs.

Read more at this link.

edit: I see that you're not trying to boot. I understand, though, that drives formatted under GPT are only readable by Intel/PPC Macs running Tiger. (Though I'm not positive.)
 
coal said:
Read more at this link.

edit: I see that you're not trying to boot. I understand, though, that drives formatted under GPT are only readable by Intel/PPC Macs running Tiger. (Though I'm not positive.)

You were spot on with that link! cheers!

It’s not just booting. GPT drives can’t be mounted by Macs that don’t understand GPT. That appears to be any Mac running 10.4.2 or earlier. Long term, this may be a worse compatibility headache than booting is today.
 
There are three partitioning systems.

GPT: For the boot drive on an Intel system.
APM: For external drives, or boot drives on PowerPC systems.
MBR: For Windows compatibility.

Your external drive should use APM unless you're trying to boot from it.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.