macOS USB Installer

You can create a bootable USB to install macOS on other Macs with one command, without any third party software. The macOS Installer from the App Store contains a binary, createinstallmedia that will do it all for you.

sudo /Applications/Install\ macOS\ Big\ --volume /Volumes/MyVolume

See Apple’s support page “How to create a bootable installer for macOS” for full instructions.

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