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Hello,

On Feb 25, 2007, at 09:50, Joachim Thiemann wrote:

> On 25/02/07, Andy Ruhl <acruhl@gmail.com> wrote:
>> I've got very little macppc hardware experience before now, so maybe
>> I'm missing something. If someone could direct me to a hardware guide
>> or something, that would be great.
>
> Try http://lowendmac.com/ppc/g3c.shtml, esp. the "Online Resources"
> section a little down the page.  Yes, getting the G3s to boot always
> seems to involve knowing the phase of the moon, waving the chicken
> feet in _just_ the right way, and chanting the proper (in relation to
> the previous two items) Open Firmware incantation.

And on a beige G3 you also need to sacrifice a goat every now and then. 
With just the right fur pattern of course.

Ok, seriously.
I have no idea what would keep the machine from powering up with that 
other drive in. Can only imagine some wonkiness in the nvram ( does the 
B&W G3 have a CUDA or a PMU ? )
If weird stuff like that happens try the Command-Option-P-R dance. That 
will reset the parameter RAM, sometimes that's enough. If that doesn't 
help ( or doesn't do a thing at all) take out the battery, wait two 
hours, put it back in and see if things improve.
The machine might need NVRAM patches to boot via OF from any IDE device 
- - the easiest way is to have it boot from an OSX installation CD, then 
reset, break into OF and correct boot-device, boot-file etc.
Besides that IDE cables may be bad and Heathrow-based Macs seem to be 
VERY picky here.
The battery itself may be bad too, some macs don't power up with a bad 
mainboard battery.
And finally - the PMU or CUDA's firmware might be messed up. To fix 
that unplug the machine, remove the battery, find a button labeled 
'cuda reset' or 'pmu reset' ( some powerbooks have it on the back of 
the unit but I'm pretty sure all desktop macs have it on the mainboard 
) - push and hold it for a minute or so - this should drain any charge 
left in any capacitator that might still keep the cuda/pmu's internal 
memory up. Then put things back in and see if it helps.

have fun
Michael
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