I have an iMac G3 with 600mhz CPU and 256mb ram.
https://everymac.com/systems/apple/imac/specs/imac_600_graphite.html
I have installed OS Jaguar and OS 9.2.2
When I try to start OS 9.2.2 it begins to start then crashes.
My question is are:
1) Are these two operating systems compatible or do I need to use OS 9.1 ?
2) What is the minimum system requirements to run these two operating systems on one computer ?
I think you mean 256MB!
I don't understand about OS 9.2.2 running in the background? That sounds like Classic Mode which is a close approximation of 9.2.2 and ran within OS X from 10.1 to 10.4. However G3 Macs included a dual boot option which meant you could run EITHER OS X OR 9.2.2 natively, with certain apps (iTunes, AppleWorks among them) running in either OS. For that, you would have to have installed 9.2.2 separately.
If both OS's are present, then to change from Jaguar to 9.2.2 (i.e. natively, not Classic Mode) you would launch System Preferences, click Startup Disk, and choose 9.2.2 - in 9.2.2 you would select the StartUp Disk option from the Control Panels (which is the equivalent of System Preferences in pre-OS X).
If you're in OS X and 9.2.2 is not listed in the Startup Disks then you don't have it natively, only in OS X Classic mode.
The advantage of running natively instead of in Classic Mode is that some apps only ran in native mode. However, it does sound as if you installed Jaguar and included the OS 9.2.2 option, which installed the Classic Mode, not native 9.2.2
A G3 iMac will support an external HD up to 128GB in size, but you'd have to find the right kind. Modern drives won't be recognised or won't work.
An iMac G3 should be able to run both Jaguar and 9.2.2 - you should have the maximum 384MB of RAM installed if it's the earliest model, the later will take more.
That is enough RAM for both OS so if 9.2.2 is crashing, it's unlikely to be RAM, especially if Jaguar runs ok.
It may be your installation of 9.2.2? Where did you install it from?
I once ran both OS on a G3 iBook so theoretically you should be able to with your setup.
Yes, I have it working fine with 256gb. Of ram. There is an option to display OS 9.2.2 menu or run in background. I thought it was crashing but it was just running in the background.
What is the max hard-drive size supported on this computer?
I am going to upgrade the ram to 1gb. ( max).
This computer is used for playing old games .
Ram minimum requirements iMac G3 ?
