Wiping free space on an OS X volume

Discussion in 'OS X' started by pmartin, Aug 30, 2006.

  1. macrumors regular

    Joined:
    Apr 23, 2005
    #1
    Hello, I was just wondering if any of you knew of a program that can wipe the free space on a hard drive (overwriting with zeroes is all that's necessary, even if it's not that secure.)
     
  2. Moderator emeritus

    Mitthrawnuruodo

    Joined:
    Mar 10, 2004
    Location:
    Bergen, Norway
    #2
    Disk Utility.

    You'll find it in /Applications/Utilities/

    Just look under the Erase tab. :)
     

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  3. thread starter macrumors regular

    Joined:
    Apr 23, 2005
    #3
    /slaps head :eek:

    Thanks
     
  4. macrumors newbie

    Joined:
    Jun 10, 2009
    #4
    File slack

    Apple's Disk Utility, however, does not seem to wipe file slacks when wiping free space, resulting in an incomplete erase of free space. File slacks is the space after a file's data ends and until the file system block ends, and on a modern harddrive it can constitute gigabytes of data. Forensic investigators frequently find interesting information in file slack.

    To wipe free space AND file slack, you need to use Jetico's BCWipe.

    For a tutorial, see http://wipeosx.wordpress.com/
     
  5. macrumors 6502a

    2012Tony2012

    Joined:
    Dec 2, 2012
    #5
    Does Jetico's BCWipe work on imac? And is there a free alternative?
     
  6. macrumors 601

    Mr. Retrofire

    Joined:
    Mar 2, 2010
    Location:
    www.emiliana.cl
    #6
    AFAIK, this is no problem on HFS+ volumes, because (Mac) OS X writes zeroes in each block before it writes the data in the block. (Mac) OS X does this since Mac OS 8.1 (no, not 10.8.1).
     

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