FAQ | Frequently Asked Questions

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Q: What are the minimum requirements for OS X 10.7 Lion?
A: Listed below are some minimum requirements for upgrading to OS X 10.7 Lion.
  1. Make sure your Mac can run Lion. Your Mac must have an Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor to run Lion. Find out if your current Mac has one of these processors by clicking the Apple icon at the top left of your screen, then choosing About This Mac.

    2GB physical RAM. Even though 2 GB is the official minimum, I strongly suggest having more, if your budget allows.

    Some computers may require updated EFI or SMC firmware to run Lion. To see if a firmware update is available, check this Web page: http://support.apple.com/kb/HT1237.

    Apple says Lion requires 8 GB of free disk space—presumably not including the 4 GB or so you’ll need for the installer itself. And, in fact, a full install of Lion can, under optimal conditions, fit in less than 6 GB of disk space. But my experience suggests that in real-world use, 8 GB is cutting it too close for comfort. I recommend starting with at least 20 GB of free space (before downloading the installer).

    In order to purchase Lion from the Mac App Store, you must be running the latest version of Snow Leopard. So, if your Mac already has Snow Leopard installed but its version is 10.6.7 or earlier (check by choosing Apple Menu > About This Mac), be sure to update it to the latest version

  2. Make sure you have the latest version of Snow Leopard. Get up to date with the latest version of OS X Snow Leopard to purchase OS X Lion from the Mac App Store. If you have Snow Leopard, click the Apple icon and choose Software Update to install Snow Leopard v10.6.8, the latest version.

  3. For Departmental purchases: Contact Kengshi or Paul.

    For Personal purchases: Download OS X Lion from the Mac App Store. Open the Mac App Store from your Dock to buy and download it. Then follow the onscreen instructions to install Lion.