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[UnSoNiC]

Hello,

I have a G4 (model M8570 EMC 1914) with firewire 800 and Sonnet Encore/ST 2*1,8Ghz processor.

I have intsalled the Mac OS 9 for unsupported systems and it doesn't work with the Sonnet processor. It starts but it freezes at start (i put a photo at the moment it freezes).

When I change the processor with the original one that is the 2*1,25Ghz processor, everything's fine. The problem is only there with the Sonnet processor.

Can somebody tell me what's wrong?

Thank you

[IIO]

those sonnets can boot OS9, but they require 10.3.9 or 10.4 in order to get in touch with the latest firmware/boot rom.

has this computer been booting into OSX before? thats the next thing to try: boot this machine one or two times into panther and see if it can boot into OS9 afterwards.

[supernova777]

which video card is installed
have u tried booting with extensions off (hold shift)

i would agree with IIO.
u probably need to install some firmware modification

[Knezzen]

Did you install the Open Firmware "patch" that makes Mac OS 9 think you have a supported G4 CPU installed? It won't boot with the Sonnet CPU without the patch and just hang as you describe it.

Download the .sit file attached. Launch it in Mac OS 9 with the old CPU installed. Shut down the machine when the install is done and put in the Sonnet CPU.

From the picture it looks like you have some kind of Sonnet extension installed already... Try reinstalling the Sonnet software perhaps.

[UnSoNiC]

The machine is starting perfectly with mac os x, patch has been done ... I tried to reinstall the patch under mac os 9 with the old processor but it tells me that the patch has already been done. It boots with mac os 9 but freezes at starting.

[devils_advisor]

that icon is the extension for the sonnet cpu upgrade. Big BUT is if he flashed before installing the whole thing. besides that is the cpu upgrade compatible with your machine ?
i bought one before and never thought about that really and was trying to install it in my mdd and it doesnt work in that machine at all.

btw as you mention you got a very odd combination already > os9 for unsupported machines and then a cpu upgrade on top < i dont think anybody tested that before. i believe that unsupported image works pretty well with a stock machine but any hardware changes could render it useless

[UnSoNiC]

The CPU is compatible with my machine cause it works perfectly with mac os x. It just doesn't boot correctly with mac os 9. I don't know why ...

[devils_advisor]

have you thought about the os9 install for a unsupported mac ?
your mac doesnt qualify to run os9 in the first place right ?

can you boot into os9 without that extension installed ?

you might have to take a hit and use the stock cpu or get a qicksilver if you need that cpu installed. i had to do the same thing but i can boot into os9 with the sonnet encore

[UnSoNiC]

Yes i have installed mac os 9 for unsupported mac. It starts perfectly with the old processor but not with the Sonnet processor

[devils_advisor]

thats what im saying get a quicksilver and use that sonnet cpu in that machine. you will see it works. but i have my doubts about this odd combination with your fw800

i have that 1.8ghz cpu installed in my machine and it works for osx/os9 but it had to be at least a quicksilver

[MacTron]

Hello,

I have a G4 (model M8570 EMC 1914) with firewire 800 and Sonnet Encore/ST 2*1,8Ghz processor.

Pull out the Sonnet Encore/ST 2*1,8 Ghz processor. Immediately. It can damage your MDD motherboard!

[UnSoNiC]

why could it damage the motherboard ? It runned on mac os 10.5 for years without problem.

[devils_advisor]

there was no way for me to flash the machine with one of my mdd's. the tool refused to do it so if he has a mdd i dont know how he got it managed to flash. there is a different version for mdd's and xserve's available or lets say was.

[devils_advisor]

why could it damage the motherboard ? It runned on mac os 10.5 for years without problem.

your machine doesn not support os9 officially. from what i gather the os9 image for unsupported macs does require a slight change on your firmware. that cpu needs a firmware patch aswell. i dont know how they work together but so far i can tell this wont go anywhere.

this is not a intel where you just check if the socket can hold the cpu. your mac has certain limitations and that cpu wont lift them. even if it fits it doesnt mean you should install it.

[UnSoNiC]

For the firmware, the Sonnet cpu needs Boot Rom 4.4.8f2 or higher. On my machine, it's 4.5.7f1

I think like you said that it's a problem between the Mac Os 9 for unsupported machines and the Sonnet CPU.

I have at the studio a 5870 EMC1914 machine with firewire 400 and no firewire 800. I'm going to try on this machine with a "classic" Mac OS9 installation because this machine is Mac OS9 bootable.

[devils_advisor]

do you have the box for that cpu upgrade ?

[Knezzen]

Is it really a Sonnet Encore/ST unit an not a Sonnet Encore/MDX? Can you take a picture of it and post on the forum? Im just really curious. The ST was never supported for the MDD G4's, that's why MacTron wanted you to remove it from the computer.

[UnSoNiC]

Oh sorry, I realize at the time that I made a mistake in the subject title! 

It's a Sonnet Encore / MDX G4 Duet 2*1.8Mhz for Power Mac G4 MDD

[Knezzen]

It makes more sense now . Thanks for the update.

[MacTron]

Oh sorry, I realize at the time that I made a mistake in the subject title! 

It's a Sonnet Encore / MDX G4 Duet 2*1.8Mhz for Power Mac G4 MDD

It's OK now.
... but don't try to test this CPU on a QuickSilver or other non MDD (or xServe) Mac ... LOL