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Other Hardware and Peripherals Other Apple systems and peripherals discussion.

external hard drive


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VA_hXc

 
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I have it formatted in Mac OS extended(journaled) and its partitioned as GUID. Even with that done I still can't boot up using it. It doesn't show when i start up holding down option key. So my question is can you a USB external drive to boot from?
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I believe you can only boot from Firewire external hard drives, not USB.


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iRye

 
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You can boot from USB disks if you happen to have an Intel Mac.
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Oh really? Hadn't heard about that. Care to point me toward a guide to doing so?


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iRye

 
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Link to TUAW.

I've done this myself, and it's the same as FW, just select it at the boot menu
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VA_hXc

 
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I got it to work. I had to put the generic OS X on the external. I was trying to do something with the Air and trying to use its install disc but it doesn't have firewire and I couldn't get the disc to install on other Mac's.
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Quote:
Originally Posted by iRye View Post
Link to TUAW.

I've done this myself, and it's the same as FW, just select it at the boot menu
Very nice. I'll be sure to keep that guide in mind if I ever need to use it.

+virtual rep to you sir!!


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To get the external HDD to boot it is necessary to format in Apple Partition Map. Connect the drive and when it appears on the desktop you will have to use Disk Utility to make it Apple Partition Map and not OS Extended.

After backing up your system using utility such as SuperDuper, it is the best, the disk should appear in Startup Disks in the System Preferences. You can then boot from USB2 Intel and Firewire PPC.
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