It's best to verify that the files were written to the drive by opening the partition and checking ( Figure E).
#How to make a bootable usb os x el capitan on windows install
Upon completion (and barring any fatal errors), the drive will be ready to install OS X El Capitan on supported devices.The drive will be made bootable and the boot files transferred over as well ( Figure D).The partition is erased and the installer files are copied to the drive ( Figure C).When prompted, enter the admin password to execute the process ( Figure B).
Sudo /Applications/Install\ OS\ X\ El\ Capitan\ Public\ Beta.app/Contents/Resources/createinstallmedia -volume /Volumes/DRIVE_LABEL -applicationpath /Applications/Install\ OS\ X\ El\ Capitan\ Public\ Beta.app -nointeraction