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Booting OS X off a USB drive with a PPC Mac
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Senior User
Join Date: Mar 2007
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I'm trying to look for an answer to this but am getting mixed results with Google. Some say they can and do boot OS X off a USB hard drive using a G4 and some say it's not possible. I need to figure this one out because when Leopard is released I want to install it on an external drive first to see if all my apps work before I replace 10.4.
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AFAIK only intel Macs can boot from USB devices.
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Senior User
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That's what I always thought but I'm seeing so many conflicting opinions. For example, one person wrote that a cloner app (Super Duper) created a bootable USB volume for their PPC Mac. Can anyone confirm if there is an application that can do it?
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Moderator  Join Date: May 2001
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You can clone a (bootable) volume, but still your Mac won't be able to boot off it. However, if you clone from that USB device again (to a firewire drive for instance), it'll work just fine.
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I don't suffer from insanity, I enjoy every minute of it.
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on a similar note, if you can even get it to see the usb device in openfirmware, then there should be no issue booting off of it, as you can even run the boot command straight for the device.
something like:
boot device:partition,\path\components\to\boot\file
ex, to boot off your internal hd, you can do
boot hd:,\System\Library\CoreServices\BootX
(Last edited by arcticmac; Mar 24, 2007 at 11:28 PM.
(Reason:stupid smilies))
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Posting Junkie
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Originally Posted by angelmb 
AFAIK only intel Macs can boot from USB devices.
That is my understanding as well.
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Forum Regular
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Originally Posted by Simon
That is my understanding as well.
If you look at that link I posted, it tells how some have booted from USB drives using an iMac G5.
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