What You’ll Do
Prepare to Install Mac OS X Lion
Determine the Current Mac OS Version
Get Mac Information
Get Mac OS X Lion from the App Store
Install Mac OS X Lion
Reinstall Mac OS X Lion
If you’re upgrading to Mac OS X Lion from a previous version of Mac OS X, this appendix describes how to prepare and install Mac OS X Lion. The temptation is to download the Installation app from the Mac App Store and start the installation, but you can avoid problems by making sure your computer is ready for Mac OS X Lion. Before you install Lion, you need to check your computer hardware and software and make several setup decisions that relate to your computer. When you’re ready to start the installation, ...