How to erase a hard drive

Discussion in 'Mac Basics and Help' started by masterjedi73, Jun 4, 2010.

  1. masterjedi73 macrumors 6502

    masterjedi73

    Joined:
    Jan 12, 2004
    #1
    I have a mac I want to sell. How can I be sure that all of my private data is completely erased? Does a fresh install (complete) of OS X work?

    thanks.
     
  2. McGiord macrumors 601

    McGiord

    Joined:
    Oct 5, 2003
    Location:
    Dark Castle
    #2
    the safest way is using disk utility. Boot with your apple disc, hold down the C key while booting with the disc inside your mac's optical drive.

    The skip the installation of OS, and use Disk Utility, select Erase method. Zeros. Will take some minutes but will erase everything. The actual bits are not erased until you do something like this.

    Or put all your sensitive files in the trash and use the secure empty trash via the apple menu.
     
  3. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #3
  4. masterjedi73 thread starter macrumors 6502

    masterjedi73

    Joined:
    Jan 12, 2004
  5. bbazzahh macrumors newbie

    Joined:
    Jun 3, 2010
    #5
    Use the 7 Pass Erase - takes a while but is good. Its in Security Options of Disk Utility
     
  6. JediMeister macrumors 68040

    Joined:
    Oct 9, 2008
    #6
    7-pass is overkill, 35-more so. Unless you are carrying codes for a nuclear arsenal, confidential medical records, or the blueprints, specs, and source code for the iPhone über running iPhone OS 9, 1-pass should suffice.
     

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