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Old 02-28-2009, 08:38 PM
jlgage01 jlgage01 is offline
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Join Date: Feb 2009
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Intel Mac boots on Apple Partition but not GUID?!?!

I have Leopard on my computer. I have used SD for years and even have had it save my bacon. My original SD backup external HDD was/is a Lacie d2 (250GB, same size as iMac internal HDD). It is partitioned as an Apple Partition Map and will boot up off of it.

I recently got 2 more Lacie drives that are larger than my internal HDD and I have partitioned them using GUID Partition Map with partitions for a SD backup as well. However these SD backups will not boot up Leopard. I have Erased, Partitioned, reback-uped, everything and they will not reboot. Does anyone have any suggestions?

I don't know why the Apple Partition Map will boot, but the GUID will not. I don't think an Intel Mac is even supposed to boot from an Apple Partition. I actually ran my Mac off the Lacie d2 for a week on my wife's laptop while my iMac HDD was being repaired so I know it works and works reliably.
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