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  1. #1
    Installing El Capitan
    Pamelap's Avatar
    Member Since
    Jan 17, 2015
    Your Mac's Specs
    2011 MacBook Air; iPhone 5s; iPad
    Rep Power
    Installing El Capitan
    I have a Macbook Air running OS X Lion, 10.7.5. I have downloaded El Capitan, but when I try to install it I get the error message "OS X cannot be installed on Macintosh HD". What do I do now?

    Thank you.

  2. #2
    Installing El Capitan
    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    Your Mac's Specs
    iMac, i7 4GHz, 32GB memory, 1TB Blade, OS X.14.6 Mojave,
    Rep Power
    Well did you download from the App Store and the MBA is the one mentioned in your avatar, 2011 model? How much free space is on th hard drive? You are starting the install from the Installer in the Apllications Folder? Have you run Verify over the hard drive from within Disk Utility? If you backup to an external drive, is it disconnected when attempting the install?
    Last edited by harryb2448; 11-02-2015 at 10:19 PM.
    Using OS X.7 or later make a bootable USB thumb drive before running Installer!

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