Macbook air - Problem in boot USB

Discussion in 'MacBook Air' started by omarmonteiro, May 25, 2012.

  1. omarmonteiro macrumors newbie

    Joined:
    May 25, 2012
    #1
    :(Hey Guys, good afternoon.

    I have a problem on my macbook air, I'm trying to format, using a USB device that I created using the image of the lion 10.7.4, but the version of the lion of my macbook is 10.7.2. maybe that's the problem.

    When I boot via usb, a circle appears scratched.

    mac.jpg


    And I can not format or reinstall anything, and where I am, I do not have wifi internet.

    So,

    how can I solve this problem?

    Thanks for the help.

    (Note: Do not repair my bad English.)
     
  2. halledise macrumors 65816

    Joined:
    May 7, 2009
    Location:
    Hamilton Island, Whitsundays, QLD Australia
    #2
    you need another usb containing the Lion Disk Recovery partition on it to be able to startup and then you can install Lion to your USB stick

    link here:
    http://support.apple.com/kb/DL1433

    Note: In order to create an external Lion Recovery using the Lion Recovery Assistant, the Mac must have an existing Recovery HD.
     
  3. applerepairs macrumors member

    Joined:
    Nov 21, 2011
    Location:
    Fulham, London
    #3
    This sign is called no entry which mean either hard drive is faulty or problem with
    logic board.

    Get it checked from the Apple Expert...
     

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