Yes, this is why I was interested by that, as I seem to remember someone saying previously that an iMac G3 (with G4) had tried to boot Leopard and failed with the platform drivers error, so I'm wondering how this guy managed to get it working. It doesn't sound as if he even had to do any modifications, which is what I don't understand as Leo has no drivers for the iMac if the first person to try that was right that it didn't work? Unless the earlier iMacs were more Gossamer-ish in terms of their hardware than the later ones, and Leo recognises the later ones but not the earlier ones?
By the way, does anyone here know if someone out there is working on some drivers to get Leo going on Yikes upgraded G3 machines? I'm sure this can't be that difficult for someone that knows what they're doing - if that Ryan was still around he'd get this sorted in no time, I've read some stuff written by him and he is an absolute guru, knows OS X and these Macs completely inside out. Having a superfast G4 that I can't install Leo on is frustrating!
What I'm really getting at is where in OS X these platform drivers actually are, ie where it compares your machine with the built-in definitions and seems to work if you have a Pismo or possibly an iMac G3, but fails with no matching driver found on a tower G3/Yikes?