Guid versus Master Boot Record (partitioning hard drive)

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Guid versus Master Boot Record (partitioning hard drive)

I have my Aperture Library moved onto a brand new external hard drive. I partitioned the hard drive (Mac OS X Journaled) but forgot to use GUID. For partition it says:"Master Boot record."

Do I have to reformat? Or can I use Master Boot record?

Thanks in advance for any help with this!

iMac 2.0 ghz, Mac OS X (10.5.6), 2 gig Ram

Posted on May 25, 2009 9:58 AM

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Answer 1

May 25, 2009 12:50 PM in response to MarieBoyer

This should not be an issue unless you plan to install OSX and make that a bootable drive.

However, with the last drive I bought, I had to change the partition scheme from Master Boot Record before it would even allow me to format it OSX (Journaled). So Double check to make sure that it didn't format FAT32.

You've got have GUID for disk to be bootable for Intel based macs or Apple Partition Map for disk to be bootable for Power PC based macs, but I really don't think it matters otherwise.

DLS

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Answer 2

MarieBoyer Author

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May 25, 2009 2:57 PM in response to DLScreative

Oh my Guid! Thank you ever so much!

They are formatted Mac OSX Extended Journaled but on a Master Boot Record.

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