Can I do a clean install of ML after already installing ML?

Discussion in 'OS X Mountain Lion (10.8)' started by jmanley1, Jul 29, 2012.

  1. macrumors member

    jmanley1

    Joined:
    Jun 25, 2012
    Location:
    Columbus, Ohio
    #1
    I would really like to do a clean install of Mountain Lion if I could. However, on Wednesday, I went ahead and upgraded from Lion to Mountain Lion.

    If I perform all of the steps found here: Link will that be a clean install (e.g. wipe out the hard drive and install a fresh ML)?

    Thanks
     
  2. macrumors member

    Joined:
    Sep 17, 2011
    #2
    For me a clean installation worked out well. You might have to download ML again in case it was deleted from your hard drive.

    But if you have your Image, everything would work fine.

    Alternately you could do it with your recovery partition I guess (hold alt while booting and start from recovery)
     
  3. macrumors 68020

    Joined:
    Jul 13, 2008
    #3
    If you're willing to run the risk, yes, it could work. Depends on your knowledge of the process and the quality of your backup.

    Remember that you are erasing everything you own. So be careful.
     
  4. macrumors 65832

    SR45

    Joined:
    Aug 17, 2011
    Location:
    Florida
    #4
    It was nice for the hard work to write the program to do a clean install using a USB thumb drive. I tried it out, after which It only took approx 15/20 minutes total to install Mountain Lion apposed to the Recovery Method that took 40 minutes plus, depending on your cable download speed, not to mention if the Server is being tied up.
     
  5. macrumors newbie

    Joined:
    Jun 11, 2010
    #5
    On my old Macbook that my sister will be using from now. I upgraded from 10.7.4 to 10.8, then rebooted to disk utility, wiped the hard drive and installed ML via internet. Took a good while, but I didnt have a thumb drive on hand.
     
  6. thread starter macrumors member

    jmanley1

    Joined:
    Jun 25, 2012
    Location:
    Columbus, Ohio
    #6
    Thanks for the replies guys. I followed the various instructions I found around the web (including here at MR). I completed my "clean" install of ML after erasing the entire Macintosh HD (but not before saving my photos, music and docs to a back up HD).

    Voila! I'm done. Very exciting to have a fresh OS X Mountain Lion running here. Who knows if it will make any discernible difference but in my mind, it's nice to have a clean slate.
     

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