Using iPhone as USB for clean install

Discussion in 'OS X Mountain Lion (10.8)' started by Geddenmark, Feb 15, 2013.

  1. macrumors newbie

    Oct 12, 2009

    I don't have a usb device big enough for containing the dmg file when I want to clean install Mountain Lion. However I saved the dmg file on my iPhone with DiskAid but was not able to boot from the iPhone as a USB device. I guess it is not possible because you can't see the iPhone in Disk Utility and therefore can't save the dmg correctly.

    However I would like to know if anyone has an idea as to how I could use my iPhone as a bootable usb device for clean installing Mountain Lion?
  2. Futurix, Feb 15, 2013
    Last edited: Feb 15, 2013

    macrumors regular


    Nov 22, 2011
  3. macrumors 6502a

    Sep 13, 2009
    You could always drop a small partition at the end of the drive and put the install files there. After your done, just delete the partition and grow Macintosh HD to take up the space.
  4. macrumors 65832


    Aug 17, 2011
    Why can't you purchase a cheap 8 GB USB thumb drive and put Mountain Lion on it ?

    Lion DiskMaker ( US )
  5. thread starter macrumors newbie

    Oct 12, 2009
    Seems like Quad5Ny's advice is working. Thanks a lot. Then I save the money on the USB stick
  6. macrumors 68030

    Krazy Bill

    Dec 21, 2011
    Without an external device, how do you backup your stuff? :eek:

    While I applaud your frugality, external USB drives are pretty freaking cheap these days.
  7. thread starter macrumors newbie

    Oct 12, 2009
    As I mentioned in the first post I wanted to do a clean install. I wanted it to be like a new Mac, so no need for backup.

    By the way it worked perfectly.

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