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Easily boot from USB 2.0 drives on PowerPC Macs
Authored by: cjm7c on Nov 12, '06 11:57:36PM

I found the following interesting anomaly when attempting to boot from my USB 2.0 Western Digital "My Book" drive. First I tried to make a clone of my Mac's drive using RsyncX. While it appears that the synchronization process was successful, I found I was not able to boot from the remote drive as I expected (it's well known that booting from an external USB drive isn't supported on Macs). I then tried, as the comment suggested, making my backup clone with SuperDuper!. Somehow, my Mac was actually able to boot off the USB 2.0 drive using the backup clone made by SuperDuper!.

I don't know exactly what SuperDuper! does outside of simply copying files so I can't speculate on why this program allowed my Mac to boot off a USB 2.0 drive. I'll provide my system information in case it helps someone figure out why this worked.

Powerbook G4 12"
PowerPC 1.33 GHz



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Easily boot from USB 2.0 drives on PowerPC Macs
Authored by: cjm7c on Nov 13, '06 12:01:54AM

I'm also running 10.4.8



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Easily boot from USB 2.0 drives on PowerPC Macs
Authored by: yogiqan on Oct 27, '07 06:38:15PM

Hmm, same machine here, well, almost: 12" Powerbook, 1.5 GHz, 1.25 GB RAM, 160 GB HDD, running 10.4.10. Made a clone with SuperDuper 2.1.4 to an 2.5" HDD in an external USB housing, took about 90 minutes, as fast (or slow) as Carbon Copy Cloner or Disk Utility restore. Looked good, almost everything got across oK (except, thankfully, for the virtual memory partitions;-), but no-go. Not with option at startup, nor selectable in the Startup Disk Panel. I did the backup with the formatting option and the permissions repair enabled, but that shouldn't do any damage. So, what am I missing here?



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Easily boot from USB 2.0 drives on PowerPC Macs
Authored by: johnsawyercjs on Apr 22, '08 12:55:23PM

Some late-model Powerbook G4s don't seem to be able to boot from USB. Though other factors might be at play: this user's USB drive might not be one that supports booting; he may not have reset PRAM, NVRAM, etc.



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