Installation and Recovery
Is your computer up-to-date?
To use Lion, make sure your computer has the following:
OS X v10.6.6 or later (v10.6.8 recommended)
Get up to date with the latest version of OS X Snow Leopard to purchase OS X Lion. If you have Snow Leopard, click the Apple icon and choose Software Update to install version 10.6.8.
If you are running OS X Snow Leopard you may purchase OS X Lion for $19.99 by calling 1-800-MY-APPLE. You will receive an email containing a content code to download OS X Lion via the Mac App Store.
If you're running OS X Leopard, you need to upgrade to OS X Snow Leopard prior to upgrading to OS X Lion. OS X Snow Leopard is available via DVD for $19.99 by calling 1-800-MY-APPLE.
7GB of available disk space
If your computer does not meet these requirements, you will need to upgrade your computer before using Lion.