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Apple Computing Products:
macOS - Operating System
How do you boot from an external hard drive?
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<blockquote data-quote="Clairejr" data-source="post: 553734" data-attributes="member: 29819"><p>Check in Disk Utility that the drive is Apple Partition Map and not GUID. If it isn't APM, it won't boot on a PPC Mac. GUID drives will show up in System Preferences as start up disks, but they can only be used to start up an Intel Mac. That may be the problem you're having. I made that mistake the other day with my WD drive (same one that you have, I think) attached to my old PPC Mini and it did exactly what you described. I selected it but the Mini booted into the internal drive. </p><p></p><p>If that isn't the problem, disconnect any other devices connected to your Mac, especially USB connected devices. The WD My Book Premium has FW-USB conflict problems when it's connected via FW. I had to disconnect all my external equipment until I figured out why I couldn't get the drive to boot with FW. It turned out to be a conflict with an external DVD drive connected via USB. </p><p></p><p>Claire</p></blockquote><p></p>
[QUOTE="Clairejr, post: 553734, member: 29819"] Check in Disk Utility that the drive is Apple Partition Map and not GUID. If it isn't APM, it won't boot on a PPC Mac. GUID drives will show up in System Preferences as start up disks, but they can only be used to start up an Intel Mac. That may be the problem you're having. I made that mistake the other day with my WD drive (same one that you have, I think) attached to my old PPC Mini and it did exactly what you described. I selected it but the Mini booted into the internal drive. If that isn't the problem, disconnect any other devices connected to your Mac, especially USB connected devices. The WD My Book Premium has FW-USB conflict problems when it's connected via FW. I had to disconnect all my external equipment until I figured out why I couldn't get the drive to boot with FW. It turned out to be a conflict with an external DVD drive connected via USB. Claire [/QUOTE]
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Apple Computing Products:
macOS - Operating System
How do you boot from an external hard drive?
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