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Disk Utility will not erase former MacBook HD

170 Views 0 Replies Latest reply: Jun 29, 2012 9:39 AM by giantELF RSS
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Jun 29, 2012 9:39 AM

Hello,

 

I have swapped my MacBook 13 inch 120 gig HD for a 250 gig HD.  I am running Snow Leopard.  I used the cloning method with an external case.  All went well.

 

I would now like to use the old HD as an external drive.  However, Disk Utility erase options are greyed out as though I am booted from the old external disk and not the new internal.  I have ejected the disk a few times.  How can I work around this?

 

Do I need to find another mac on which to erase the disk?  Will it even work or will that mac also see it as a bootable disk?  I have erased old HDs post swap in the past this way but not with Snow Leopard.

 

Do I need third party software?

 

Thanks

MacBook, Mac OS X (10.6.8)

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