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Getting ready for Mountain Lion: checking for compatibility


Does your Mac qualify for Mountain Lion? Not every system does, although if you're already running OS X Lion, chances are good that you'll be able to upgrade. Still, you'll want to check. The following hardware models will support Mountain Lion, according to Apple's specifications page:

  • iMac (Mid 2007 or newer)
  • MacBook (Late 2008 Aluminum, or Early 2009 or newer)
  • MacBook Pro (Mid/Late 2007 or newer)
  • MacBook Air (Late 2008 or newer)
  • Mac mini (Early 2009 or newer)
  • Mac Pro (Early 2008 or newer)

Mountain Lion requires 2GB RAM or more (we recommend putting in as much RAM as your computer can hold; it's probably the most cost effective high-value upgrade you can give your system) and 8GB of free hard drive space (we recommend 15-20 GB at least, preferably more).

You can upgrade from OS X Snow Leopard (OS X 10.6) as well as Lion (OS X 10.7). Make sure you update to OS X 10.6.8 first, the latest Snow Leopard release. From there, you can purchase Mountain Lion from the Mac App Store and install it to your computer.

Upgrading will not wipe away any user accounts or user data you have installed on your computer. For the most part, you can upgrade, and then pick up working wherever you left off. You may find that some apps won't make the leap, but most will -- although that's a topic for another post.

Not all Mountain Lion features work out-of-the-box on all systems. To use AirDrop, the feature that lets you share files between computers using configuration-free drag-and-drop, you need a fairly recent system: MacBook Pro (Late 2008 or newer), MacBook Air (Late 2010 or newer), MacBook (Late 2008 or newer), iMac (Early 2009 or newer), Mac mini (Mid 2010 or newer), Mac Pro (Early 2009 with AirPort Extreme card, or Mid 2010). My personal 2009 Mac mini doesn't support AirDrop.

AirPlay Mirroring, which lets you transmit your computer's screen to Apple TV, requires mid-2011 hardware or newer for the most part.

You can work around both of these limitations, if you have a mind to. We posted directions on how to enable AirDrop on older systems. You can use a third party solution like AirParrot to add your own screen mirroring to nearly any Mac, including those running older operating systems.

For many new Mac owners, your move to Mountain Lion represents your first major upgrade. To help users prepare to make the jump, Steve Sande and I wrote Getting Ready for Mountain Lion, an Amazon/iBooks eBook. It's aimed at first-time upgraders and people looking for hints and tips about smoothing the transition. We're sharing some of our tips on TUAW in a series of posts about the 10.8 upgrade. OS X Mountain Lion will be offered for sale in July 2012 for $19.99.

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