

Sudo /Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume -applicationpath /Applications/Install OS X El Capitan.app Sudo /Applications/Install macOS Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume -applicationpath /Applications/Install macOS Sierra.app

Sudo /Applications/Install macOS High Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume -applicationpath /Applications/Install macOS High Sierra.app Paste that entire command line from below at the Terminal's prompt: Choose the appropriate command line (in red) depending upon what OS X installer you want. Open the Terminal in the Utilities' folder. Click on the Apply button and wait for the Done button to activate.

Set the Format type to Mac OS Extended (Journaled.)
