Create a bootable image from the El Capitan installer on a USB stick larger than 6GB.It will be downloaded to /Applications and be named Install OS X El Capitan.app It might complain that you already have it installed but download it anyway.
Create a bootable image from the El Capitan installer on a USB stick larger than 6GB.It will be downloaded to /Applications and be named Install OS X El Capitan.app It might complain that you already have it installed but download it anyway.