Unibody MacBook Pro models with 13" displays produced from 2009-2012.

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How to install Mac OSX Sierra on a new hard drive

I am installing a new hard drive on a mid 2012 13" MacBook Pro. How do I install the Mac OSX Sierra operating system?

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Do an internet recovery install. Here's how, remember with a new drive you will first need to go to Disk Utilities and format the drive GUID Mac Extended:

http://www.idownloadblog.com/2016/02/25/...

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The internet recovery would have the old previous OS X or even older right?

Well if it ends up being the case the OS can be updated using the apple app store and clicking on Mac OS x Sierra upgrade there.

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@benjamen50 With a new drive an internet recovery is going to install the original OS X the machine shipped with. But you have to have a system installed to get to the APP store.

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