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Easily boot from USB 2.0 drives on PowerPC Macs
Authored by: junk666 on May 28, '10 02:34:48AM

Title of this hint should be "Easily Boot From USB Drive Whenever Possible". If it is possible, it is easy. If it is impossible, (as in the case of the very latest PowerPC Mac (PowerMac G4 FW800), well, it ain't easy.

Apple does not address booting any PPC Mac to USB. They do mention {{http://support.apple.com/kb/HT1948}} that...
"Intel-based Macs support starting from an external USB storage device's volume that:

* Has been formatted with a GUID partition type
* Contains an installation of Mac OS X 10.4.5 or later, or Mac OS X 10.5 or later, which is compatible with (or shipped with) the Mac that the USB device is connected to. Note: You should not use a version of Mac OS X that is earlier ("older") than the version your Mac shipped with.

To start from a USB storage device that meets the above requirements, connect the device, then select it in Startup Disk preferences. Or, connect the device, restart, and immediately press and hold the Option key to access Startup Manager.

Notes:

* It may be necessary to connect the USB storage device to an external power supply, depending on its power requirements.
* If you're using a MacBook or MacBook Pro, try using a different USB port if you cannot startup from the external USB storage device.
* On a MacBook Air, the computer may shutdown automatically as a preventive measure if a USB device with issues is connected, or if the USB port on the MacBook Air itself is damaged.
* If you use Boot Camp, you may not be able to boot natively into supported versions of Microsoft Windows XP or Windows Vista operating systems installed on external USB hard drive.



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