If your computer came with Mac OS X 10.4 already installed on it, you can skip this appendix—for now. But if you're running an earlier version of the Mac OS and want to savor the Tiger experience, this appendix describes how to install the new operating system on your Mac.
For starters, you need to make sure that you and your Mac have what it takes to handle Mac OS X—specifically:
A Macintosh that came with a G3, G4, or G5 processor. In other words, a Power Mac G3 (but not the old beige ones), Power Mac G4, or Power Mac G5; an iMac or eMac; a PowerBook G3 (the final model, the one with a FireWire jack) or PowerBook G4; or an iBook. (According to Apple, Macs with G3 or G4 upgrade cards don't qualify. Neither do original fruit-colored iMacs with CD trays that slide open.) You can bend the rules a little, however; see the box on the next page.
Actually, G-whatever chips aren't the only acceptable ones. Tiger also runs on the 2006-and-later Macs that contain Intel processors!
Plenty of free hard disk space. You need 2 to 5 GB free to install the full Mac OS X 10.4—more if you install the Developer Tools, less if you decline to install all the optional languages and printer drivers (more on this in a moment).
A lot of memory. Remember that when you use Mac OS X, you may sometimes have to run Mac OS 9 (in the form of the Classic simulator) simultaneously. One modern operating system takes a lot of RAM; two of them require even ...