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ML clean install problem, help!

Discussion in 'OS X Mountain Lion (10.8)' started by PEN10k, Mar 23, 2013.

  1. macrumors regular

    Hello Guys
    I want to peform a clean install of Mountain Lion on my rMBP.
    I've created a USB stick installer through disc utility.

    But when I restart the computer, and hold down ALT to view the different boot options, my ML USB installer won't appear?

    Anyone who can help?


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