How to apply GPT partition maps?

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Level 1

11 points

How to apply GPT partition maps?

Hi.

I am trying to create a backup of my Macintosh HD to my external HD which has been partitioned into two separate drives. When I go into Disk Utility from booting up and try to restore the Macintosh HD onto the external partitioned drive which is 'Mac OS Extended (Journaled)' a prompt comes up saying "Restore Failure: Recovery partition restores can only be done on GPT partition maps'.

What does this mean and what do I need to do to make the sufficient changes in order to complete this process? Any help or advice would be greatly appreciate, Thanks.

Ravi.

Mac mini, OS X Mavericks (10.9)

Posted on Jan 19, 2015 4:48 AM

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Answer 1

greg sahli

Level 7

25,508 points

Jan 19, 2015 5:18 AM in response to irav_86

In Disk Utility, with Partition tab selected, highlight the drive to partition, then select how many partitions (probably one), then click on the Options button below. There, select GUID partition table. Now finish the partitioning.

(this process deletes any files already on the drive - copy them to another drive first!)

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Answer 2

irav_86 Author

Level 1

11 points

Jan 19, 2015 5:25 AM in response to greg sahli

Thanks. Will this process delete any of the files I have on the other partition (Windows NT Filesystem) on the External HD?

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Answer 3

Eric Root

Level 10

687,411 points

Jan 19, 2015 8:58 AM in response to irav_86

It shouldn't.

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Answer 4

irav_86 Author

Level 1

11 points

Jan 19, 2015 10:19 AM in response to Eric Root

When I try to partition the individual drive I don't see any other option than to repartition the whole drive including the Windows NT Filesystem formatted one.

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