Apple Training Series: Mac OS X Support Essentials v10.6: A Guide to Supporting and Troubleshooting Mac OS X v10.6 Snow Leopard

When Classic starts, it must initialize itself, identify hardware components, and present a user interface. Here's an example of a Classic application starting when Classic is not already running:

1.

You open a Classic application, such as SimpleText.

2.

The application icon appears in the Dock. Classic Startup (an application that starts the Classic environment) starts, and a "9" icon appears in the Dock to represent the Classic Startup process.

As the Classic environment loads, the Classic icon in the Dock "fills in" as a progress monitor, in addition to the progress bar in the Classic window.

3.

The TruBlueEnvironment process starts. This is the Classic environment.

4.

Mac OS 9.2.x starts, and a window displaying the Mac OS 9 startup screen appears. If an error occurs during startup, the system expands the window to show the error message.

5.

The Classic application (in this case, SimpleText) starts up, and the Classic Startup icon disappears from the Dock.

NOTE

Once started, the Classic environment runs until it is stopped or the system restarts. If it is started in this manner, it will run in the background after you quit the Classic application, so reopening a Classic applicationor opening a second Classic applicationwould be much faster than outlined here.

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