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Mac OS 8.6 for (some) Unsupported G3s and G4s

LightBulbFun

Well-known member
Thanks for the heads up. I've tweaked it to match your version.

ahh its still not quite right im afraid

this is what you should do :)


Code:
dev /cpus/PowerPC,G4
000c0206 encode-int " cpu-version" property
unselect-dev


and if you want to actually see the changes before and after you would want to do it like so

Code:
dev /cpus/PowerPC,G4
.properties
000c0206 encode-int " cpu-version" property
.properties
unselect-dev


and also note the actual name of the CPU in Open Firmware, most stock G4 systems will be just "PowerPC,G4" but if you have something like a 7447-7448 CPU upgrade and depending on who's firmware patcher your using the name might be "PowerPC,60?" for example and if you have a multiple CPU system you will have to do it for each CPU, and dont forget you might likely need a patched multi-processor extension (or if using a 7455 just use the one from 9.2.2? I dunno, never really tested it!)

if your not sure you can just do a ls /cpus and see what name is read back :)
 

RandomSeed

New member
Thanks for this! Will give it a go.
My hosting service isn't great sorry. People in the Americas might find the connection drops. All I can say is sorry, but if you keep trying it eventually should complete.
I had the connection drop issue but used wget via terminal and was able to handle the connection issues.
 

Figgy2112

New member
Tried On My 2001 600mhz iMac G3 with the stock 16mb vram ati card, Seemed to read it fine and boot but no video, just a white screen even tho it looked and sounded like things were reading/working
 
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