Macbooks only boot from Option

Discussion in 'macOS' started by bronxtech, Oct 12, 2009.

  1. bronxtech macrumors newbie

    Joined:
    Oct 12, 2009
    #1
    I recently got a new unibody Macbook from work. Unfortunately, it has a smaller hard drive than my old white Macbook. Since most of the hardware is the same, I thought it might work if I just switch the drives. It does, and system profiler even detects all the right hardware on both computers. However, I can't do a normal reboot. If I try to start up normally, I get a black screen that says "No bootable device. Insert boot disk and press F1" on the unibody machine and a flashing disk with a question mark on the white macbook (which has updated firmware). However, if I hold down Option on startup, my hard drive comes up without a problem and I can continue to boot, select operating system, all as normal.

    This really gets in the way when installing new software, is a minor annoyance for obvious reasons. Anyone have an idea how to fix it?
     
  2. Richard1028 macrumors 68000

    Joined:
    Jan 8, 2009
    #2
    You need to set the default startup disk. (System preferences).
     
  3. bronxtech thread starter macrumors newbie

    Joined:
    Oct 12, 2009
    #3
    That works!

    Thanks for making me feel simultaneously dumb and happy.
     
  4. borcanm macrumors regular

    Joined:
    Nov 4, 2008
    #4
    Go to System Preferences ->Startup disk -> select your HD and click restart.
     
  5. Richard1028 macrumors 68000

    Joined:
    Jan 8, 2009
    #5
    You aren't dumb. I tried photoshopping a speck off my monitor once. :D
     

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