How to disable a firmware password in OS x 10.6

Written by john w. smith
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How to disable a firmware password in OS x 10.6
Tampering with a Mac's firmware may void the computer's warranty. (Jupiterimages/Photos.com/Getty Images)

Firmware is a combination of software and hardware that stores permanent instructions for your computer. It tells the computer what to do upon start-up. You can password-protect firmware on your Mac computer running OS X 10.6 (named Snow Leopard) to prevent users from tampering with any settings. However, if you need to remove this password, you can by accessing the Terminal utility, the Mac's command line interface.

Skill level:
Moderate

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Things you need

  • Snow Leopard installation disc

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Instructions

  1. 1

    Insert the Snow Leopard installation disc into your Mac's CD/DVD drive. Wait for a window to appear.

  2. 2

    Open a Terminal window. Click "Go" in the menu bar at the top of the screen. Click the "Utilities" option in the resulting menu. Scroll to and click "Terminal." Or, you can click the Spotlight magnifying glass icon on the right side of the menu, type "terminal" (without quotes) and press "Return."

  3. 3

    Type the following command in the Terminal window and press "Return:"

    open /Volumes/Mac\ OS\ X\ Install\ DVD/Applications

  4. 4

    Click "Utilities," then "Firmware Password Utility" in the Finder window that appears. Enter your administrative password if prompted.

  5. 5

    Un-check the "Require password to start this computer from another source" check-box and click "OK." This disables the firmware password.

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