macOS Catalina USB安裝碟 製作教學,這我寫的,參考看看https://www.mobile01.com/topicdetail.php?f=481&t=5922546&p=1#74980615
先前我已經做好一隻, 終端機模式,指令如下:sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume