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Mac Thread, G5 Power Mac not booting in Technical; I am looking at a G5 Power Mac that won't boot. It chimes and then sticks on a white screen ...
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    G5 Power Mac not booting

    I am looking at a G5 Power Mac that won't boot.
    It chimes and then sticks on a white screen with the apple logo.
    It will go into terminal mode.

    Any ideas where to start diagnostic wise ? Or any ideas as to what is wrong with it ?

    thanks

    Michael

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    mac_shinobi's Avatar
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    Have you got any data that you are trying to or want to get off of the hard drive(s) ? If not can you boot up with the OS Installation disc ( Insert disc and holding down the C key on the keyboard which should make it boot from the OS Disc ). Does that get any further ?

    If not you can try and reset pram and nvram on the G5 ( not sure if this article is related to G5 as the article does not state which machines it relates to ) --> Resetting your Mac's PRAM and NVRAM

    Possibly SMU --> How to reset the SMU on a Power Mac G5 (Late 2004) or Power Mac G5 (Late 2005)

    Also have you got a new hard drive to make sure it is not the hard drive which is at fault ??

  3. Thanks to mac_shinobi from:

    difinity (27th June 2012)

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    I've taken the hard drive out and recovered the required files. I have done the SMU reset, but no change.

    I was trying to get the Mac to boot. I don't have the installation disc, i will have to see if i can locate one from somewhere.

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    Any retail disc will do the job as long as it is powerpc based. A leopard disc for instance (10.5).

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    difinity (28th June 2012), mac_shinobi (27th June 2012)

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    Quote Originally Posted by HodgeHi View Post
    Any retail disc will do the job as long as it is powerpc based. A leopard disc for instance (10.5).
    Anything up to 10.5.x will work ( as above PPC aka power pc based ), from 10.6 onwards they dropped support for PPC and is all intel based now.

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    If you don't have a 10.5 disc to hand, you could also try the PPC edition of Ubuntu 12.04.

    Code:
    http://cdimage.ubuntu.com/releases/precise/release/ubuntu-12.04-desktop-powerpc.iso

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    difinity (28th June 2012), HodgeHi (2nd July 2012), mac_shinobi (27th June 2012)

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    You may be able to tell what is causing the failure to load by booting into verbose mode. It's either hold down cmd and V or just V on startup. I can never remember which, because they keep changing stuff around

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    CMD V will do verbose. You can then follow the instruction before the prompt to do a disk check (fsck -fy).

    CMD+ALT (option)+O+F will boot you to open firmware where you can do reset-nvram (enter) reset-all

    We had a load of early G5s which had odd boot issues which were all symptoms of logic board failure (this mostly affected dual 1.8 and dual 2.0 from 2003/4)



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