Last login: Fri Feb 28 15:11:39 on ttys002 You have new mail. wenqidongdeMBP:~ wenqidong$ sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/mojave Password: Ready to start. To continue we need to erase the volume at /Volumes/mojave. If you wish to continue type (Y) then press return: Y Erasing disk: 0%... 10%... 20%... 30%... 100% Copying to disk: 0%... 10%... 20%... 30%... 40%... 50%... 60%... 70%... 80%... 90%... 100% Making disk bootable... Copying boot files... Install media now available at "/Volumes/Install macOS Mojave" wenqidongdeMBP:~ wenqidong$