If you're using a Mac notebook computer, plug it into AC power. It takes time to download and install OS X, so make sure that you have a reliable Internet connection. Time Machine makes it simple, and other backup methods are also available. If your Mac isn't compatible with OS X El Capitan, the installer will let you know.īefore installing any upgrade, it’s a good idea to back up your Mac. To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . Mac Pro introduced in early 2008 or later Mac mini introduced in early 2009 or later MacBook Pro introduced in mid 2007 or later You should take your 2009 MacBook Pro up to at least 10.11 El Capitan. If you ever upgraded in another machine, they are available under your purchases tab in the App Store. Fortunately they are pretty easy to obtain. MacBook Air introduced in late 2008 or later The only way to upgrade to an older version of Mac OS X is to have a copy of the installer. (If your Mac is running an old version of OS X, you must install Snow Leopard 10.6.8 first. MacBook introduced in 2009 or later, plus MacBook (13-inch, Aluminum, Late 2008) Clean up and update software before installing. Your Mac also needs at least 2GB of memory and 8.8GB of available storage space. You can upgrade to OS X El Capitan from OS X Snow Leopard or later on any of the following Mac models. OS X El Capitan remains available for Mac computers that can't upgrade to macOS Catalina, Mojave, High Sierra, or Sierra, or that need to upgrade to El Capitan first.
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