open firmware

Question

open firmware

is there something wrong? pressing cmd option+of will not let me boot into open firmware?

any other way to enter open firmware?

thanks

macbook 2nd gen

mac mini 1.25 ppc 1gig ram:: macbook c2d 2ghz 1gb ram, Mac OS X (10.4.10), pentium 4@2.4ghz 768mb ram

Posted on Dec 29, 2007 4:36 PM

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Answer 1

Best reply

Kappy

Level 10

361,731 points

Dec 29, 2007 5:52 PM in response to no_read_no_write

There is no Open Firmware on Intel Macs. They use EFI firmware. Why do you need to access it? You can still access single-user mode the same way as on PPC Macs.

It is possible to work with the EFI firmware but you will need rEFIt - VersionTracker or MacUpdate.

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Answer 2

Dec 29, 2007 6:20 PM in response to Kappy

any known commands on how to enter efi? (without using refi) thanks

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Answer 3

Kappy

Level 10

361,731 points

Dec 29, 2007 8:04 PM in response to no_read_no_write

No, sorry. There is no particular need for the user to interact with the firmware other than to set the Firmware Password for which there is a separate utility included on the installer discs.

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Answer 4

Jan 20, 2008 10:03 PM in response to Kappy

yes but here's my problem... i need to change my user name from standard to administrator but the problem is i have firmware and it wont let me use the disk.....so i how can i disable firmware to change that and i need to do it so i can install my printer. I read an artical that said: Disabling Password Protection  1) Boot into the Open Firmware. (Command + Option + O + F)  2) Type "setenv security-mode none" and press return.  3) Enter in the password at the password request prompt and press return.  4) Then type "reset-all" to restart the computer.   Force Removing Password Protection  1) Add or remove DIMMs to change the total amount of RAM in the computer.  2) Then, the PRAM must be reset 3 times. (Command + Option + P + R).
But i can't figure it out....can you please help me i need to install my printer soon to print things off for college.

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Answer 5

Jan 20, 2008 10:09 PM in response to no_read_no_write

yes but here's my problem... i need to change my user name from standard to administrator but the problem is i have firmware and it wont let me use the disk.....so i how can i disable firmware to change that and i need to do it so i can install my printer. I read an artical that said: Disabling Password Protection  1) Boot into the Open Firmware. (Command + Option + O + F)  2) Type "setenv security-mode none" and press return.  3) Enter in the password at the password request prompt and press return.  4) Then type "reset-all" to restart the computer.   Force Removing Password Protection  1) Add or remove DIMMs to change the total amount of RAM in the computer.  2) Then, the PRAM must be reset 3 times. (Command + Option + P + R).
But i can't figure it out....can you please help me i need to install my printer soon to print things off for college.

Reply