For the first time, you can upgrade your Mac to the latest release of OS X for free. Just click the Mac App Store icon on your Mac. Download OS X Mavericks. And your Mac does the rest. Follow these steps to begin your upgrade.


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. Click the link below to see if your Mac is compatible with OS X Mavericks.
View compatible Mac models- 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)
- Xserve (Early 2009)

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 Mavericks from Snow Leopard (10.6.8), Lion (10.7), or Mountain Lion (10.8). Click the link below if you have an older version of OS X.
Upgrading from older versions of OS XUpgrading from OS X Snow Leopard
If you’re running Snow Leopard (10.6.x), update to the latest version of Snow Leopard before you download OS X Mavericks from the Mac App Store. Click the Apple icon and choose Software Update to install OS X Snow Leopard 10.6.8, the latest version.
Upgrading from OS X Leopard
If you’re running Leopard and would like to upgrade to OS X Mavericks, first you’ll need to upgrade to OS X Snow Leopard. You can purchase OS X Snow Leopard here.

Open the Mac App Store and click OS X Mavericks. Click the Download button. Then follow the onscreen instructions to install it. If you don’t have broadband access, you can visit any Apple Retail Store to get help with downloading.