1. Check your Mac hardware.
To get details about your Mac model, click the Apple icon at the top left of your screen, choose About This Mac, then choose More Info. These Mac models are compatible with OS X El Capitan:
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 nWhat is El Capitan? Learn More
Mac mini (Early 2009 or newer)
Mac Pro (Early 2008 or newer)
Xserve (Early 2009)
2. Check your version of OS X.
While you have the About This Mac window open, check what version of OS X your Mac is running. You’ll see it listed beneath your serial number. You can upgrade to OS X El Capitan from the following:
OS X Snow Leopard (v10.6.8)
OS X Lion (v10.7)
OS X Mountain Lion (v10.8)
OS X Mavericks (v10.9)
OS X Yosemite (v10.10)
Have an older version of OS X? Learn how to upgrade
3. Upgrade to OS X El Capitan for free.
Visit the OS X El Capitan page on the Mac App Store. Click the download button, and follow the onscreen instructions to begin your upgrade. If you don’t have broadband access, you can upgrade your Mac at any Apple Retail Store.
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Last Updated - May 31, 2016 12:03AM PDT