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The Classic Environment
One of the goals of the Mac OS X development team was to build an operating system that would allow for compatibility with most existing Mac application software. After all, who would buy Mac OS X if they couldn't use their favorite applications with it?The developer's strategy was to make it possible for Mac OS 9.1 or later to run as a process within Mac OS X. Users could then run applications that had not yet been updated for Mac OS X within the Mac OS 9.x process, which is called the Classic environment .The Classic environment utilizes a complete Mac OS 9.x System Folder that contains just about all the components you'd find on a computer that doesn't have Mac OS X installed. This System Folder is so complete, you may even be able to start your computer from itthat means you can choose whether to boot from Mac OS 9.x or Mac OS X.This chapter provides an overview of the Mac OS 9.x installation and configuration process, then explains how you can use the Classic environment and Mac OS 9.x to work with applications that aren't ready for Mac OS X.
Tip- In 2003, Apple began selling Macs that won't start from Mac OS 9.x. The Classic environment, however, is still available to run pre-Mac OS X applications.
