Secure Erase rMBP before exchange?

Discussion in 'MacBook Pro' started by OSMac, Jun 30, 2012.

  1. OSMac macrumors 65816

    Joined:
    Jun 14, 2010
    #1
    Exchanging a rMBP, rebooted into recovery and ran disk utility.
    Only the erase button was available the security button was greyed out.

    Is a standard erase all that is needed to wipe data on the SSD?
     
  2. iMacDragon macrumors 65816

    iMacDragon

    Joined:
    Oct 18, 2008
    Location:
    UK
    #2
    If they've implemented it correctly, it should be. On an SSD there is a function to do a quick wipe of whole drive that essentially tells the controller to mark the whole drive as available again ( and on some controllers at least throw away internal encryption key so that any date stored on drive is non recoverable even by direct hardware access, don't know if this applies to what apple use in rMPB or not ), and any reads will return 0's until written to sector.
     
  3. OSMac, Jun 30, 2012
    Last edited: Jun 30, 2012

    OSMac thread starter macrumors 65816

    Joined:
    Jun 14, 2010
    #3
    Interesting.

    Also found this suggestion:

    1) Boot into recovery mode and standard erase the partition using disk utility and reinstall the os.
    2) Then Boot into recovery again and open a terminal window and enter:

    diskutil secureerase freespace 0 disk0s2

    That is assuming disk0s2 is the main osx partition, it was on my rMBP.
     

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