On Aug 18, 2012, at 11:40 PM, Jonas Ulrich wrote:

Kris, I think you're thinking of the later G3 iMacs. For a G3 333MHZ iMac, because of lack of FireWire ports, you can only run up to 10.3.9. Unless you use a tool like XPostFacto, in which case you could run 10.4.11. The ram maxes out at 512MB.

Yes, I forgot, but that limitation because of the Firewire ports is totally artificial, and once installed, 10.4.11 runs without XPostFacto or any other limitations other than those already present. Using XPostFacto may be the easiest way to install onto these, but you don't need to "install" XPF onto the clean installation of OS X. Other options for installing include: creating a custom install disc with a modified OSInstall.dist file that's missing the system check; booting from USB HD with a cloned installer containing the modified OSInstall.dist; booting an OS X system from USB and cloning it onto the internal HD; removing the internal HD and installing OS X on another Mac or external enclosure and transfer the HD back again. There are some others, such as using Pacifist to install; or cloning the installer disc onto a partition of the internal HD using OS 9 (need special version of Disk Copy, v.6.5b13 to clone OS X) and then modify the file from OS 9 and boot the OS X installer.

I'm not sure about the RAM, I thought you could use two 512MB SoDimm modules, but it appears you're correct and there's some other limitation that restricts it to 512MB total.

Looking at all these limitations, I'd say it's probably time to give up on this old Mac and get something newer. People give me old computers for free that are way better than this, and I turned down a whole pallet of these simply because their day has past us by.

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