How to boot from USB when option key is broken?

Discussion in 'MacBook Air' started by Mavec, May 8, 2017.

  1. Mavec macrumors newbie

    Aug 7, 2011
    I have a 2011 MBA and am trying to boot into a bootable USB drive, running Mountain Lion. The problem is that the computer was dropped a long time ago and most keys do not work, including the Option key. I plugged in an external keyboard and which has an ALT key to substitute for Option and in Mac OS works as a replacement for Option with no issue. However, while holding down the ALT key on the external keyboard to boot up as I would with Option if the keyboard were not broken, it does not seem to have an effect and goes right into Mac OS.

    I am wondering if there is a way to choose the USB port as the default to boot into or another way I can boot into the USB port? Thanks...
  2. keysofanxiety macrumors G3


    Nov 23, 2011
    On startup, try hold Windows key + R on the external keyboard instead; does that boot into OS X Utilities? If you're using an Apple keyboard, hold CMD + R. If this does nothing, try to hold CMD+ALT+R / WIN key+ALT+R on startup for Internet Recovery.

    Any luck?
  3. Bruno09 macrumors 68020

    Aug 24, 2013
    Far from here
  4. niteflyr macrumors 6502a

    Nov 29, 2011
    Southern Cal
  5. ritmomundo macrumors 68000


    Jan 12, 2011
    Los Angeles, CA
    This is going to seem like a stupid suggestion, but a lot of people don't realize there are two Option keys... You tried both?

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