firmware password lock

I have a PowerBook G4 that when booting holding the option key to boot to startup manager, show a open firmware password lock.

I am not the original owner of the Mac so I do not have any of the passwords.
I have tried booting the Mac to the OSX CD with no luck. I can startup the Mac in to Open Firmware command line. But there if I type a commend, it then asks for the password that I do not have.

How can Open Firmware password be rest so that I can gain access to the HD and boot the PowerBook G4 up get and get the data off the drive?

PowerBook G4, Mac OS X (10.5)

Posted on Mar 8, 2011 2:37 PM

Reply
2 replies

Mar 8, 2011 3:30 PM in response to Jade Curtis

Jade

Use a cross-head screwdriver (No 0) to release the four screws retaining the RAM bay cover plate. Once you release the cover plate you can remove the RAM Modules. Make sure you ground yourself first or if you have an ESD wrist strip handy, use it. If there are two RAM Modules remove the one in the top slot and put it to one side. Nove move the second module from the bottom slot into the top slot. If there is only one RAM Module move it out of whatever slot it is in and into the other slot. Now reboot the laptop and reset the Parameter RAM or PRAM (pronounced PeeRAM). To reset the PRAM depress the command alt+pr keys simultaneously. After the initial boot chime on restart you should hear another one after a few seconds. Release the keys and let the laptop boot normally.

If you've done everything correctly you should have successfully cleared the firmware password.

Once you've verified there's no firmware password any more, shut down the laptop and either insert the removed Module (assuming two modules) and secure the RAM Bay cover plate, or simply secure the RAM Bay cover plate if there was only one RAM Module to begin with.

HTH?

Tony

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firmware password lock

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