Want to securely delete something and zero out free space...

Discussion in 'Mac Basics and Help' started by majordude, Feb 22, 2009.

  1. majordude macrumors 68020

    majordude

    Joined:
    Apr 28, 2007
    Location:
    Hootersville
    #1
    I have a huge external drive. I just deleted some things that I don't want anymore. But I still have a lot of stuff I want on the drive so I can't format it and move on. I have to keep a lot of files on there.

    How can I erase and zero out the free space that is left when I deleted those files?

    I want a secure wipe.

    Any ideas?
     
  2. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #2
    Open Disk Utility, select the drive or partition you want to zero, go to the Erase page, and click Erase Free Space.
     
  3. majordude thread starter macrumors 68020

    majordude

    Joined:
    Apr 28, 2007
    Location:
    Hootersville
    #3
    It won't reformat or erase the entire drive?
     
  4. kastenbrust macrumors 68030

    kastenbrust

    Joined:
    Dec 26, 2008
    Location:
    North Korea
    #4
    Insert Restore DVD that came with your Mac, Boot from DVD, use Disk Utility from the DVD to zero the whole drive.
     
  5. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #5
    No it won't. Contrary to what kastenbrust says, there is no need to boot to your restore DVD in order to do this. Even the startup disk can be cleaned from within the OS.
     
  6. kastenbrust macrumors 68030

    kastenbrust

    Joined:
    Dec 26, 2008
    Location:
    North Korea
    #6
    then how do you delete the os? he said he wants to format the entire drive?
     
  7. majordude thread starter macrumors 68020

    majordude

    Joined:
    Apr 28, 2007
    Location:
    Hootersville
    #7
    NO! I don't want to format the entire drive. Sheesh!

    Put down the beer and slowly back away from the keyboard. :rolleyes:

    EXCELLENT! Thank you Blue! :D
     
  8. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #8
    No problem. By the way, you can avoid having to zero free space in future by enabling the "empty trash securely" option in the Finder preferences.
     

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