1 Reply Latest reply: Oct 26, 2012 1:56 AM by mikehenden
mikehenden Level 1 Level 1 (0 points)

I have no idea when Firmware Protection  was set up or what password is? Is there a way to disable or override?


PowerMac, Mac OS X (10.4.11), G5 Tower
  • 1. Re: How can I disable Open Firmware account that has been enabled on my machine (Mac G5, OS X 10.4.11)?
    mikehenden Level 1 Level 1 (0 points)

    Got it.

     

    1. Shut down machine and unplug power supply

     

    2. Fiddle with the RAM DIMMS. Specifically (carefully) remove a memory card and replace it. Be very careful that the static electricity from your person doesn't 'shock' the card. Wear an anti static strap or keep yourself grounded to the machine.

     

    3. Once card replaced, restart machine holding down Opt+Control+P+R ('zap the PRam'). Hold keys down until you hear the Mac startup time three times. At this point the PRam has been wiped and you can relear keys. Password is wiped from memory.