How to create MAC OS Sierra USB Installation Drive

How to create MAC OS Sierra Installation bootable USB Flash Drive 1. Download MAC OS Sierra Installation file for free from Apple Store on any MAC Computer 2. Insert and format through Disk Utility any USB Flash Drive. It needs to be at least 8Gb. Rename the USB Drive to "Untitled". 3. Open Terminal, Copy/Paste the following command, and Hit Enter: sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ macOS\ Sierra.app The process of creating your bootable drive in the Terminal may take arround 10 min (depending on your Mac Performance). Your MAC OS Sierra bootable Installation Flash Drive is Ready For Use. To Install MAC OS Sierra on MAC computer, turn on the Mac, and hold the Option key (bootable devices like HDD, USB... will be displayed). After this select your USB and Hit Enter and follwo the steps as usualy when reinstalling MAC OS.