lion will not install

Discussion in 'Mac OS X Lion (10.7)' started by Mrsimey7, Jul 21, 2011.

  1. Mrsimey7 macrumors newbie

    Apr 30, 2011
    Canberra, Australia
    hey guys i downloaded lion
    but when it came to installing i can't hit the install button, or select a drive,
    it says for my macintosh HD-"this disk cannot be used to start up your computer"
    please help
  2. qCzar macrumors regular

    Feb 27, 2011
    SFBA, CA
    If Snow Leopard was installed as NTFS at some point (I know I have), Lion may not be able to install. I can't confirm this as my current Mac will be staying as OS X Snow Leopard.

    Go into "Disk Utility" and click on the HDD. It'll be the first tabbed item. At the bottom it says "Mount Point:," "Format" etc. If the Format reads HFS+, Max OS , Mac OS Extended or anything like that you're likely okay. If it reads FAT32, NTFS or something else you may need to perform a clean install of Lion by reinstalling SL as Mac OS Extended.

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