Oct 24, 2019 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. On September 17, 2015, Apple released Mac OS X 10.11.1 El Capitan beta 1 (build number 15B17c, (‘pre-release’). I positively tested it with an Apple TV 3 running on Apple TV 7.2 software. Find more about Mac OS X 10.11 El Capitan on Apple’s Website. In contrast to OS X 10.11 El Capitan GM, I had NOT to re-install OpenPlex. There seem to. Apple on Wednesday released an update to its Mac operating system, El Capitan. The 10.11.1 update is available in the App Store under Updates. You can also go to the Apple menu, select About This.
Install El Capitan from Scratch
Imac specs for running el capitan.
Backup if possible before continuing. Google not an option as mail providor for mac mojave.
- Restart the computer. Immediately after the chime hold down the Command and Rkeys until the Apple logo appears. When the Utility Menu appears:
- Select Disk Utility from the Utility Menu and click on Continue button.
- When Disk Utility loads select the volume (indented entry, usually Macintosh HD) from the Device list.
- Click on the Erase icon in Disk Utility's main window. A panel will drop down.
- Set the Format type to Mac OS Extended (Journaled.)
- Click on the Apply button, then wait for the Done button to activate and click on it.
- Quit Disk Utility and return to the Utility Menu.
- Select Reinstall OS X and click on the Continue button.