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[darthnVader]

I wanted to put this info here because we often edit the nvramrc so we can boot OS 9 on unsupported models.

If you corrupt the nvram with the wrong code, it can leave your Mac unbootable and Command+Opt+P+R doesn't work.

Here is what you do:

For desktops, just hold the power button, and keep holding......You'll hear the programers tone, keep holding, you'll hear a boot chime, then the system will enter Open Firmware with the defaults loaded. Now just reset the nvram.

For Portables, hold Power and Apple Key, keep holding, you'll here the programers tone, keep holding, you'll hear a boot chime, keep holding, the system will enter Open Firmware and you can reset the nvram.

This will likely work to bypass an Open Firmware password.

I'll test it and get back to you.

[darthnVader]

It won't work to bypass the Firmware password, it will still boot into Open Firmware, but you can't reset the nvram without the password.

Tho, I have heard you can remove or add ram, and that will allow for the bypassing of the Firmware password.

I've not tested that myself........

[RossDarker]

Thanks will keep this in mind. I have heard about the adding/removing ram too to bypass that OF password, sounds like it could work.

[IIO]

for the noobs among us, what would you have to type in the programmer window?

reset-all, set-defaults, or reset-nvram?

[darthnVader]

I think for New World Mac's it just:

Code: [Select]

reset-nvram
reset-all