Selling my MBP - Question on 7-pass Erase

Discussion in 'MacBook Pro' started by vijay007, May 8, 2010.

  1. vijay007 macrumors regular

    Joined:
    May 17, 2007
    #1
    I am selling my 3 year old MBP tomorrow. There a few sensitive documents like W2, Bank statements and Tax return documents on my drive. I do not want to take any chance and am planning to do a 7-pass Erase.

    Does anyone know how much time would a 7-pass Erase take? My MBP is 2.16 GHz Core 2 Duo machine with 1 GB of RAM and 120 GB HDD.

    I would greatly appreciate any quick response.
     
  2. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #2
    If you erase the entire HDD, the 111.7GiB to overwrite at 40MB/s average speed will take six hours with a 7-pass.

    Calculated via 120*1000/40/60/60*7.
     
  3. farmermac macrumors 6502a

    Joined:
    Jul 23, 2009
    Location:
    Iowa
    #3
    couple hours...

    Set it, let it go and do something else.
     
  4. Dr. Scientist macrumors member

    Joined:
    Apr 24, 2010
    #4
    You know you can recover documents after a 7-pass erase, right? Honestly, for peace of mind, buy a new 120 GB HDD.
     
  5. spinnerlys Guest

    spinnerlys

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    forlod bygningen
    #5
    How? Can Jane Doe do it, if one can do it at home?
     
  6. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #6
    Yes, just like you can recover documents that have been burned and the ashes have been scattered across the ocean.

    Given that the OP is selling his machine tomorrow, a 7-pass erase is the only realistic option (especially if the OP is not mechanically inclined). It also happens to be a reasonably secure one. A 7-pass erase will obscure data from anyone short of having governmental or military-level data recovery resources at their disposal.
     
  7. The Final Cut macrumors 6502

    Joined:
    Sep 5, 2009
    #7
    your not paranoid enough, I would suggest destroying the computer instead. Then collect the scraps, burn it, and eat the ashes.
     
  8. Dr. Scientist macrumors member

    Joined:
    Apr 24, 2010
    #8
    Geeze, forgive me for looking out for the OP.
     
  9. vijay007 thread starter macrumors regular

    Joined:
    May 17, 2007
    #9
    Thanks all for your responses. I will go with the 7-pass erase tomorrow.

    UPS will be delivering my new 15" i5 MBP on Monday :D
     
  10. Dragonforce macrumors 6502a

    Dragonforce

    Joined:
    Apr 9, 2008
    Location:
    London (Ealing) UK
    #10
    1 pass is enough to delete everything - unrecoverable.

    http://www.springerlink.com/content/408263ql11460147/

    and

    from http://en.wikipedia.org/wiki/Data_erasure
     
  11. hypermog macrumors regular

    Joined:
    Nov 17, 2009
    #11
    The information will always be stored in your brain... so to be totally sure you will have to destroy your head as well. You should plan to have a friend destroy the remains as well.
     
  12. elpmas macrumors 68000

    elpmas

    Joined:
    Sep 9, 2009
    Location:
    Where the fresh snow don't go.
    #12
    Best bet is buy a cheap hard drive off ebay and replace it yourself. Keep your old hard drive and destroy it :]
     

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