Updating your mac
CAUTION Apple does not provide support for Mac OS X on machines on which you have installed an upgrade card.You will have a much better Mac OS X experience if you install it on hardware that is on Apple's compatibility list.Because of the way Mac OS X is designed to store files (within user folders on the Mac OS X startup volume), you should have plenty of free hard drive space on the volume on which you will install Mac OS X.Mac OS X is designed so that you store all your documents and other files on the same volume as the system is installed on so you should have as much space on that drive as possible.Moving up to Mac OS X from earlier versions offers many benefits (you will learn about many of them throughout this book), but all this gain requires some pain, that being the pain of installing and learning to use a brand-new operating system.This appendix helps you with the first part, whereas the rest of the book helps you with the second.You should upgrade your Mac with as much RAM as it can handle or as much as you can affordmore RAM is better!
After you have finished the installation, you can reinstall the additional cards.
Your Mac is very likely to meet the video card requirement.
All Macs come with at least one Apple-installed video card.
Some upgrades will handle the new OS okay, but others will balk at it.
Before you try to install Mac OS X on an upgraded system, check with the manufacturer of that upgrade to see whether it is Mac OS Xcompatible.To minimize problems you might experience installing or using Mac OS X, ensure that your Mac meets the following minimum requirements as stated by Apple: If your Mac meets all these requirements, skip to the next section, "Updating Your Mac's Firmware." If you don't have one of the Mac models listed, you are probably out of the Mac OS X game.