diskutil unmountDisk force disk3
diskutil eraseDisk jhfs+ CLE gpt disk3
/Vol*/Install*/Install*/C*/R*/createinstallmedia --volume /Vol*/CLE --applicationpath /Vol*/Install*/Install* --nointeraction
/Vol*/Mac*/Install*\ OS\ X\ Yosemite.app/C*/R*/createinstallmedia --volume /Vol*/CLE --applicationpath /Vol*/Mac*/Install*\ OS\ X\ Yosemite.app --nointeraction