Secure random erase

Discussion in 'Mac OS X Lion (10.7)' started by Tech198, Sep 5, 2011.

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  1. Tech198, Sep 5, 2011

    Tech198 macrumors G4

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    #1
    From a security standpoint, how long does it take to securely erase a hard drive using: diskutil syntax. With the random erase option.

    Approx. For 500. Gig

    And when Apple says "random" in general to the pass applied, apart from the zero-pass, they all do somewhat, is it Truly random? As apple doesn't say what patten.
     
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  2. mrapplegate, Sep 5, 2011

    mrapplegate macrumors 68030

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    #2
    I would think it would vary for each computer, hard drive RPM speed, etc. As for the pattern part, if there were a pattern it would not be random.
    Truly random? I think you're getting into semantics, as one could debate random.
     
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  3. Quad5Ny, Sep 5, 2011

    Quad5Ny macrumors 6502a

    Quad5Ny

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    #3
    At 33MB/s zeroing a 120GB HDD took me about a 55min yesterday. So if you do some math, I'm sure you could figure out how long 500GB (at a different write speed) would take.

    Oh and don't bother with the random pass, its not much more secure than writing zeros.
     
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