Follow the onscreen instructions to install OS X El Capitan. Reboot by pressing the power button and holding down the ⌥ Option key while it starts up. To do this, shut down the mac you want to install El Capitan onto. Plug your drive into any eligible Mac to install El Capitan.From floppies to hard drives, MacDrive can handle almost any disk you toss at it. And in the event that your Mac disks is having a problem, our robust repair feature can fix basic disk issues.
We’ll be repeatedly referring to these Apple OS versions below, so it’s good to know the basic macOS timeline. Further down we’ll explain where to get one and what problems you may face down the road. Finally, if you want to run a parallel copy of Mac OS X on a virtual machine, you too will need a working installation file of an older Mac OS X. Also, you may have noticed your Mac’s performance went down right after the last update. To begin with, some of your apps may not be working properly (or simply crash) on newer operating systems. There are many reasons that could point you to this radical decision. So, you’ve decided to download an older version of Mac OS X.
