sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/YourUSBName --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app --nointeraction Use code with caution. Troubleshooting Common Installation Errors
Once the final command completes, you will see a clean, official file sitting directly on your desktop. 5. How to Deploy Your El Capitan ISO File Mac Os X 10.11 El Capitan Iso Download