OS X on PowerMac 8600/300?

It can run OS X.

Just use the free Xpostfacto:

http://eshop.macsales.com/OSXCenter/XPostFacto/Framework.cfm?page=XPostFacto.htm l

Correction:

It will work if you replace the 604 processor with a G3 card. Xpostfacto will NOT work unless there is a G3 or G4 card present to install X.3+
And you don't want X.2 or below at this point.

I think you need 256mb RAM.

Actually,256mb is for Tiger (10.4)!

MWWD
To get you off on the right foot, you need the complete specification for installation of 10.3.9 on your 8600.

You need a G3- and USB-native New World machine at least. If you don't have one, you will need XPostFacto to deceive the 8600 into thinking that it is G3- and USB-native.

You need a minimum of 128MB of RAM for OS X alone (Apple). If you wish to use Classic Mode you need another 64MB of RAM. This amount is so laughably inadequate that you should aim at 256MB from the outset, and 512MB would be preferable.

You need at least 2GB of hard drive space, and 2.5GB to install classic also. However, this little is as useful as trying to play tennis in a closet. Go for 6GB at least, so that both OSs can breathe and have space to write data.

You need an Apple-supported video card: ATI, IXMicro or nVidia. You need a USB card.

Most of all, you need to drop in on the OSX Discussions to get advice from those who have trodden and are treading the path that you wish to tread.

MWWD,

I installed OSX on an 8500 and ran it for a year before replacing the machine.

I ran it with 320MB which was OK. I had a Sonnet Trio card that gave me USB and an ATA channel on which to install a larger hard drive. I partitioned the new drive to 8GB and 110 GB. OSX had to be installed on the smaller partition (8 is the max size).

I had an old ATA graphics card that worked fine with 10.2 but I could not get 10.3 to run and so stuck with Jaguar. I had previously installed a G3-400 card and got good performance.

The bulliten boards or Xpostfacto can give you good advice.

It was a little painful to set up and, if you have to buy the upgrade cards, probably not ecconomic. However, I personally took it as a challenge and enjoyed getting it working.

Dave

" Is this enough to install the original OS X (10.1)?"

You keep posting one question after another, concerning the installation of OS X on your 8600. The XPostFacto home page has been provided to you, so if you'd take the time to fully read it, you'll have the answer to this and other related questions.