Later versions of the AppleCare contain both Mac OS 9 and Mac OS X enabling the AppleCare Protection Plan CD to be used as a startup disc in either operating system. This is sometimes referred to as a "dual-boot" CD.
Note: The versions of the operating system on some versions of the AppleCare Protection Plan CD may not start up all computers. For more information see technical document 25141: "AppleCare Protection Plan CD: Cannot Start Up All Macintosh Computers."
TechTool Deluxe
Versions of the AppleCare Protection Plan CD that can startup in either Mac OS 9 or Mac OS X contain a version of the TechTool Deluxe application that will work in either operating system with different interfaces depending on which operating system the computer is using. Both interfaces are compatible with Mac OS X.
Figure 1 - Mac OS 9.x TechTool application interfaces
Figure 2 - Mac OS X TechTool application interface
How to start up with different operating systems
Starting up with Mac OS 9
1. With the computer turned on and completely started up, insert the AppleCare Protection Plan CD.
2. Choose Restart from the Special menu.
3. Press and hold the C key.
4. Release the C key after the "happy Mac" face appears on screen.
The computer continues starting up, and the CD window opens automatically when the desktop appears.
5. Double-click TechTool Deluxe in the open CD window.
Starting up with Mac OS X
1. Insert the APP CD into your computer.
2. Choose Restart from the Apple menu.
3. Press and hold down the Option key to open the Startup Manager.
4. Select the Mac OS X partition on the AppleCare Protection Plan CD from the Startup Manager screen
5. Click the right arrow button.
TechTool Deluxe for Mac OS X loads directly bypassing the normal Finder desktop.
Figure 3 - Startup Manager screen
How to Use TechTool Deluxe
For directions on how to use the version of TechTool Deluxe that is on your AppleCare Protection Plan CD, follow the Quick Start Guide located on that partition of your CD.
How to determine AppleCare Protection Plan CD version
See technical document 58739: "AppleCare Protection Plan CD: Determining Version of TechTool Deluxe."