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Open Firmware booting-can anybody help me?? - Mac Programming

Hello, I am in deep doo doo and am wondering if there are any gods here who can save me. The short story is that my G4 MDD will only boot into Open Firmware, and I can't get past it. Here's how I got into this mess. I had not used my machine for some time. Came to boot it up and the OS was fubared so it wouldn't boot. Don't know what happened. I ran Diskwarrior 3 and TTP4. No apparent problems. I was going to do a clean install of Jag, using my retail Jag 10.2 disks. But ...

  1. #1

    Default Open Firmware booting-can anybody help me??

    Hello,

    I am in deep doo doo and am wondering if there are any gods here who
    can save me. The short story is that my G4 MDD will only boot into Open
    Firmware, and I can't get past it.

    Here's how I got into this mess. I had not used my machine for some
    time. Came to boot it up and the OS was fubared so it wouldn't boot.
    Don't know what happened.

    I ran Diskwarrior 3 and TTP4. No apparent problems. I was going to do a
    clean install of Jag, using my retail Jag 10.2 disks. But it would not
    let me select the "Archive and Install" option. Only Erase and Install.

    Part of the problem was the machine had 10.2.8 on it and the 10.2 Jag
    disk wouldn't install over it, I think.

    To make a long story short, I was using my usual technique of booting
    into open firmware to eject cd's, and after a few hours of ing
    around I made my fatal mistake. I typed a couple of Open Firmware
    commands, just for the heck of it, without knowing what they were for.
    I think one of them was something about memory.

    Now, every time I boot, I get an "invalid memory at such and such'
    message in O.F. I have removed the pram battery and all the RAM for
    a few minutes, then put them back in. No difference.

    At one point, the machine was starting to boot and I got a gray screen
    with many very thin black lines running vertically down the screen,
    spaced about an eighth of an inch apart.

    I've learned my lesson but don't know what to do. I was going to
    install Panther, but can't even get the machine to boot from the
    Panther disk.

    Can anybody offer me any guidance? I'll check back in the group daily
    for a few days, but if anybody wants to be proactive in helping, I'm at
    "net".

    Thank You
    camera Guest

  2. #2

    Default Re: Open Firmware booting-can anybody help me??

    As far as I remember, holding down command-option-P-R at startup
    will reset your OF to factory settings, maybe that will work.

    M.


    Martin Guest

  3. #3

    Default Re: Open Firmware booting-can anybody help me??

    camera one wrote:
     

    In open firmware, try typing
    reset-nvram
    and then return, and then
    reset-all
    and then return. It should reboot, and hopefully all will be well.
    Peter Guest

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