Open Firmware Password: can still restart from another volume

Discussion in 'macOS' started by brijazz, Nov 5, 2010.

  1. brijazz macrumors 6502

    brijazz

    Joined:
    Jul 31, 2008
    #1
    I've just set up an Open Firmware Password for the first time. My understanding is that this would prevent booting the Mac from another volume (ie an OS X install DVD). After setting up the password and rebooting my machine, I decided to test things out by inserting my OS X install DVD and selecting it from the "Startup Disk" preference pane. Lo and behold, it rebooted from the DVD without asking for the password. Any idea why this happened?
     
  2. LPZ macrumors 65816

    Joined:
    Jul 11, 2006
    #2
    What happens if you try booting into single-user mode, ie, restart and hold command-s ?

    (I think you may be misunderstanding what setting such a password does.)
     
  3. brijazz thread starter macrumors 6502

    brijazz

    Joined:
    Jul 31, 2008
    #3
    The startup keyboard shortcuts (boot from CD, single user, etc.) are disabled as anticpated.

    I expected a broader scope from the open firmware password, I guess. I figured that you couldn't boot from any other volumes without entering said password, but it seems that that only applies if you're trying to do so from a restart/cold boot.
     

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