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Thread: After installing Mac OS X Lion, unable to start my Macbook pro

  1. #1
    Join Date
    Oct 2011
    Posts
    46

    After installing Mac OS X Lion, unable to start my Macbook pro

    When I was installing lion I for my Macbook Pro, now my Macbook Pro is not starting. Anyone here who can help me to overcome these issues

  2. #2
    Join Date
    Nov 2010
    Posts
    363

    Re: After installing Mac OS X Lion, unable to start my Macbook pro

    Snow Leopard can restore to original startup disks when the Macbook is off, hold down the "C" while the power back up. When started, follow the instructions to install Snow Leopard on the disk. Make sure you are connected to a power source is turned off not until the end.

    Once returned to Snow Leopard and you are sure all is well, that Lion upgrade again. Do not turn off your computer when you upgrade. Is in the midst of improving critical parts of the operating system and can leave off critical parts removed.

  3. #3
    Join Date
    Nov 2010
    Posts
    442

    Re: After installing Mac OS X Lion, unable to start my Macbook pro

    Quote Originally Posted by Aniela View Post
    Snow Leopard can restore to original startup disks when the Macbook is off, hold down the "C" while the power back up. When started, follow the instructions to install Snow Leopard on the disk. Make sure you are connected to a power source is turned off not until the end.

    Once returned to Snow Leopard and you are sure all is well, that Lion upgrade again. Do not turn off your computer when you upgrade. Is in the midst of improving critical parts of the operating system and can leave off critical parts removed.
    Press the power switch and hold "command" and "R" until the apple icon.

  4. #4
    Join Date
    Jul 2011
    Posts
    88

    Re: After installing Mac OS X Lion, unable to start my Macbook pro

    Are you really running 10.5.1? I hope 10.6.7 or 10.6.8 do not need to upgrade to Leopard. Software. Try to answer before doing anything drastic, if your computer is outdated.

  5. #5
    Join Date
    Aug 2011
    Posts
    308

    Re: After installing Mac OS X Lion, unable to start my Macbook pro

    Quote Originally Posted by Martyna View Post
    Are you really running 10.5.1? I hope 10.6.7 or 10.6.8 do not need to upgrade to Leopard. Software. Try to answer before doing anything drastic, if your computer is outdated.
    I think something happened to my disk. I have an external drive with my iMac later acknowledged that the Macbook despite not let me install the lion. However, the disk appears to be block Macbook pro.

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