How to wipe HD and do a fresh Lion install to sell laptop?

Discussion in 'Mac OS X Lion (10.7)' started by Gherkin, Aug 14, 2011.

  1. Gherkin macrumors 6502a

    Apr 9, 2004
    I have a 2010 MBP that I am selling. ~3 weeks ago, I upgraded that machine to Lion.

    Last week, I bought an iMac. I did the Migration Assistant thing and transferred everything from the MBP to the new iMac.

    Now I want to wipe the HD on the MBP clean and put a fresh install of Lion so I can sell.

    So, I restart the MBP, I hold down CMD+R during the boot up, I select Disk Utility, and I select my drive and click erase. I get an error that says "Couldn't unmount drive."

    Not sure how to proceed.
  2. Gherkin thread starter macrumors 6502a

    Apr 9, 2004

    For example in this image:


    I was selecting "75.5 GB Hitachi" instead of "Macintosh HD." I guess you are essentially erasing your Home folder on the machine when you do this.
  3. saulinpa macrumors 6502a

    Jun 15, 2008
    It may be moot. The Lion that you downloaded is not transferable

    The license agreement:
  4. cinematicme macrumors member


    Aug 2, 2011
    You have to put the OS the machine came with back on before you can sell it.
  5. Quad5Ny macrumors 6502a


    Sep 13, 2009
    New York, USA

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