It's easy to use the "Classic" Mac OS 9 applications in Mac OS X: Just double-click their icons or run them from the Dock (if you've dragged them there). The first time you run a Mac OS 9 application in Mac OS X, you'll see a window of the Mac OS 9 environment, as Figure E-9 shows. That window disappears after Mac OS 9 has fully loaded.
The Mac OS 9 applications themselves look and run like they always have ‚ you'll get the standard Mac OS 9 menu bar, as Figure E-10 shows. A nice touch, the menu bar's Applications menu shows Mac OS X programs that are running (they all will have a generic icon) as well as any Mac OS 9 applications that are running. Thus, when running a Mac OS 9 application, you can switch to other Mac OS 9 or Mac OS X applications through either the Mac OS 9 Application menu or the Mac OS X Dock. (When running a Mac OS X application, you must use the Dock to switch to other running applications.)
Note ‚ | If you shut down or restart Mac OS X and a Mac OS 9 application is running, Mac OS X may not restart or shut down until you manually quit the Mac OS 9 application. |
Note that almost all Mac OS 9 functions are available, including the Chooser, when Classic mode is running. If you want Mac OS 9 to run automatically at Mac OS X startup, you can do so via the System Preferences' Classic control panel.