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 With that warning out of the way, let's check out the requirements necessary to build a bootable installer drive for installing OS X El Capitan: Better to err on the side of caution by installing this on a non-critical device, virtualized instance, or separate partition. In other words, if your life (okay, perhaps more like your work) depends on it, don't go installing this as an upgrade to your existing OS X install.
