Initialize all partitions and reinstall OS X in a Macbook Pro SSD

MacRumors' FAN

macrumors regular
Original poster
Sep 26, 2014
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My best friend asked me to help him: just read the title. I need your help because I do not know how to answer to his question. Reply as soon as possible because he is going to sell his MacBook Pro SSD.
 
Last edited:

hallux

macrumors 68030
Apr 25, 2012
2,774
485
Boot to a recovery partition (USB OS install media or on the internal drive), run disk utility from there and erase the disk. When you go to erase the disk, click the security options button and select to do a multi-pass erase. He or the purchaser will then need to use Internet Recovery or the USB disk used for the recovery partition to reinstall the OS.
 

MacRumors' FAN

macrumors regular
Original poster
Sep 26, 2014
140
0
Boot to a recovery partition (USB OS install media or on the internal drive), run disk utility from there and erase the disk. When you go to erase the disk, click the security options button and select to do a multi-pass erase. He or the purchaser will then need to use Internet Recovery or the USB disk used for the recovery partition to reinstall the OS.
People say that erase a SSD may destroy it!
So:
How to initialize all partitions (making impossible undelete data) and reinstall OS X in a MacBook Pro SSD?
 
Last edited:

simonsi

macrumors 601
Jan 3, 2014
4,849
716
Auckland
People say that erase a SSD may destroy it!
So:
How to initialize all partitions (making impossible undelete data) and reinstall OS X in a MacBook Pro SSD?
Just erase with the lowest number of passes, there is no need for a multi-pass erase and that does just needlessly write to the disk but it will only consume some of the lifetime of the SSD, it won't instantly destroy it.

Once erased, just take the reinstall OS X option and when complete it should be back to as-shipped from the factory.

HTH
 

MacRumors' FAN

macrumors regular
Original poster
Sep 26, 2014
140
0
Just erase with the lowest number of passes, there is no need for a multi-pass erase and that does just needlessly write to the disk but it will only consume some of the lifetime of the SSD, it won't instantly destroy it.

Once erased, just take the reinstall OS X option and when complete it should be back to as-shipped from the factory.

HTH
Why 'it should' and not 'it will'? I am Italian.
I would like to understand if you are perfectly sure of what you told me to do in order to help my friend.
 

simonsi

macrumors 601
Jan 3, 2014
4,849
716
Auckland
Why 'it should' and not 'it will'? I am Italian.
I would like to understand if you are perfectly sure of what you told me to do in order to help my friend.
I am sure but as the Americans say, your mileage may vary. I did not see the machine as shipped, the utilities concerned have other buttons you may press, you may have completely misunderstood what I meant etc etc.

But that is (Apple's) process to follow.
 

MacRumors' FAN

macrumors regular
Original poster
Sep 26, 2014
140
0
I am sure but as the Americans say, your mileage may vary. I did not see the machine as shipped, the utilities concerned have other buttons you may press, you may have completely misunderstood what I meant etc etc.

But that is (Apple's) process to follow.
Are not there other ways to make it possible?