If for some reason you forgot the Mac firmware password, read what to do about that here. Remember, this is bypassing the boot-level firmware password.
You can now use the machine as usual, boot from an external drive, or whatever else. This will release the RAMĦ) Gently wiggle the RAM card out and put it aside, you will put it back later(do NOT touch the gold bars on the front you could break it)ħ) Replace the L-bracket and put the battery back inĨ ) Boot up the computer while holding COMMAND+OPTION+P+R (this resets the parameter ram)ĩ) Wait for the startup chime to sound 3 timesġ0) Release the keys and shutdown the machine once you reach the login screenġ1) Remove Battery and L-Bracket, replace the RAM module and slide the lever back while pushing it in until it does not wiggle anymoreġ3) Now if you boot up the machine you should bypass the Mac firmware password. Here are instructions for MacBooks:ģ) Remove the three philips head screws that are on the L-bracketĥ) Slide one of the levers (it doesnt matter which one) to the left. This works the same on other Macs, but removing the RAM is obviously different, so you’d need to understand how to do that. This is a hardware based hack, proceed with caution! We are not responsible for anything that may go wrong in the process.Įssentially you are removing the systems RAM and reinstalling it, here are the steps for a MacBook. This should work on both EFI (Intel) and OFI (PPC) based Macs. While I can’t condone this activity I must say as a curious and tech savvy student I would have done the exact same thing… with that in mind I have reproduced instructions as they were provided to us below: How to Get Around a Mac Firmware Password I don’t know what school they’re at but it’s pretty cool to have a MacBook of your own provided by a school. There is a very simple way to remove these restrictions.”
This prevents you from booting up into Single User Mode, Verbose Mode, Safe Mode, Target Disk mode, and boot off of an external hard drive or network. These computers are protected by the firmware password. “This is a tutorial mainly for the people at my school who wish to modify their macbooks, leased by the school.
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