A descr


Mac OS 9 added was the ability to handle multiple users. AppleTalk over TCP/IP was also implemented. Software Update allowed users to get updates to software off the internet, and would inform users of new updates as they came out.

Mac OS 9.0.2 and 9.0.3 shipped with specific models. Mac OS 9.0.4 unified everything again, and is the only version of the classic Mac OS compatible with the Classic environment in Mac OS X Public Beta.

Mac OS 9.1 improved stability and added the Window menu. It is the minimum for the Classic Environment in Mac OS X 10.0 and 10.1. Mac OS 9.2 was only available as a pre-installed system starting with the “Quicksilver” Power Mac G4s released in the summer of 2001.

Mac OS 9.2.1 was released soon after as a maintenance update, and is recommended for Classic in Mac OS X 10.1.

Mac OS 9.2.2, the final version, was released near the end of 2001, and improves Classic performance.