How to Create a Bootable MAC OS X El Capitan USB Flash Drive

First download OS El Capitan from the App Store

After its downloaded, insert your usb drive and format it (Mac OS Extended (Journaled)) using the Disk Utility. Remember to name your new volume as elcapitan

Then, open the Terminal and type:

sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/elcapitanĀ --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app --nointeraction

Now connect your Installation usb drive on to your new computer and boot fromĀ elcapitan.

That’s it.