In order to know which installation and configuration steps you need to perform, you must first learn which versions of Mac OS are installed. There are several ways to do this; the easiest is to consult the Startup Disk control panel (on Mac OS 9.2.2 or earlier) or the Startup Disk pane of System Preferences (on Mac OS X or later).
If your computer is brand new and you haven’t started it yet, chances are you have Mac OS X 10.4 installed. When you start your computer, it’ll display the Mac OS Setup assistant. Skip ahead to the section titled “Configuring Mac OS X 10.4” later in this chapter.
A quick way to tell whether your computer is currently running Mac OS 9.2 or earlier or Mac OS X or ...