Running the OS X Installer
Now that you have prepared the hard disk, backed up your current version of OS X, and made a record of your current system settings, it's finally time to begin installing OS X Mountain Lion.
If you install OS X Mountain Lion on a disk or partition that has a previous version of OS X, the installer upgrades that previous version to Mountain Lion as well as upgrading any OS X–provided applications (see Chapters 9 through 11), while retaining your other applications and documents. If install it on an empty (new or erased) disk or partition, you get just OS X Mountain Lion and its included applications.
License agreement window
After you buy and download OS X Mountain Lion, the installation image downloads to your Mac and, when complete, the OS X installer opens to the license agreement window. (If the installer does not open automatically, go to the Applications folder and double-click the Install OS X application. Click the Continue button, and if requested enter your administrator password.)
A settings sheet appears with the legal agreement, called a license, that you agree to abide by to use OS X. Technically, you didn't buy OS X, you licensed its use from Apple, and Apple's licensing terms restrict how you use it. You can't resell OS X or give it away, for example. You can't install it on non-Apple computers. You can't reverse-engineer, modify, or otherwise access Apple's secrets stored in the operating system. You also agree that, basically, Apple's ...
Get OS X Mountain Lion Bible now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
