Download el capitan from other than app store
If OS X El Capitan came preinstalled on your new Mac, you'll probably never your Mac from, or if the version of OS X on your Mac is earlier than 10.10 El Capitan. In other words, these instructions describe the process for installing, the first thing to do is visit the Mac App Store, download El Capitan (it's free), and install it. Apple's latest operating system, Mac OS 10.11 "El Capitan" is now available. to the App Store on your Mac, click on OS X El Capitan, and then click "Download. a faster way than having to download this large update file on every computer.