Selling Mac - how can I protect my data?

Discussion in 'Mac Basics and Help' started by Mjmar, Feb 6, 2017.

  1. Mjmar macrumors 65816

    Joined:
    May 20, 2008
    #1
    I am selling a mac with an SSD and I am not able to overwrite the drive with zeroes in disk utility because it's an SSD. I am trying to think of solutions to this problem and I came up with this:

    I don't have firevault turned on, but if I do turn it on it will encrypt the data that is on the drive so it will be useless without a decryption key. Then once everything is encrypted I will boot into the recovery partition to erase the startup disk and then reinstall the OS. I'm assuming that when the OS is reinstalled the original decryption key is lost.

    Am I missing anything or will this do the trick and ensure that my data is not at risk of being recovered?

    Thanks!
     
  2. Intell macrumors P6

    Intell

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    Jan 24, 2010
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    Inside
  3. Mjmar thread starter macrumors 65816

    Joined:
    May 20, 2008
    #3
    Do you know if the encrypted version of my data will overwrite my unencrypted data when I turn firevault on, or is it not a perfect science?
     
  4. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #4
    Yes, it overwrites the entire drive with encrypted data.
     
  5. BrianBaughn macrumors 601

    BrianBaughn

    Joined:
    Feb 13, 2011
    Location:
    Baltimore, Maryland

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