Clean install without USB?

Discussion in 'OS X Mountain Lion (10.8)' started by aoaaron, Aug 3, 2012.

  1. macrumors 6502

    Sep 4, 2010
    Is there a recovery wizard or something so I can clean install mountain lion without the need for a 4GB USB?
  2. macrumors regular


    Aug 4, 2011
    First you need to do a ML-Upgrade using the App Store. This will update the Recovery HD as well. If you don't do this, your recovery will restore Lion. Then reboot you Mac while holding CMD + R, then select Disk Utility, wipe Macintosh HD, then install ML over the Internet.
  3. macrumors regular


    Jul 19, 2011
    new jersey
    If all else fails; you can always make a small 10 gig partition on your hard drive. Format ur current system drive and boot the install file from the partition. I was at work and had no dvdR or a flash drive big enough on me. Luckily i had an external hard drive and used that.

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