Boot Problems and I have a Crazy Unidentified Screen

Discussion in 'Windows, Linux & Others on the Mac' started by gadgetfreaky, Sep 14, 2012.

  1. gadgetfreaky macrumors 6502a

    Joined:
    Oct 28, 2007
    #1
    When I hit option to select the operating sysem
    it's two floating symbols. ive never seen it

    The first is a lightening bolt in grayed out circle and the 2nd is some kind of 0 in the middle with 3 "spokes" 2 slashed ones and one solid bar


    the optiosn to select an os or recovery dissapear quickly and I get that sreen.
     

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  2. lssmit02 macrumors 6502

    Joined:
    Mar 25, 2004
    #2
    Target disk mode

    Those symbols indicate you are booting into "Target Disk Mode." Normally you would enter this mode by holding down the letter "T" when restarting. Target disk mode basically turns your computer into a hard drive that you can connect to via a firewire or thunderbolt cable (you can even boot another computer from your mac using those cables).

    However, you should not be booting into target disk mode from the startup disk selector screen. Perhaps try another keyboard.
     

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