How to troubleshoot a Apple Mac computer with Open Firmware Password enabled
How to troubleshoot a computer with Open Firmware Password enabled If you cannot access the Open Firmware Password application and need to troubleshoot your computer by:* resetting the PRAM * starting up in Single-user mode * starting up in Verbose mode * starting from CD-ROM
Then follow these steps:
1. Start up into Open Firmware by pressing and holding the Command-Option-O-F key combination during startup.
2. At the Open Firmware prompt, type: reset-nvram
3. Press Return.
4. When prompted for your password, enter it and press the Return key. It responds OK.
5. At the Open Firmware prompt, type: reset-all
6. Press Return.
The computer restarts and you are now be able to reset the PRAM and startup in Single-user mode, Verbose mode, or from CD-ROM.