install high sierra from a thumb drive

dciliento wrote:

How do I install high sierra from a thumb drive

How to create a bootable installer for macOS - Apple Support

If the installer was drag-copied to the thumbdrive, connect it and double-click the application. This requires the computer to have an OS installed.

If the installation thumbdrive was created through an utility or Terminal command, connect it, restart with the Option key held down, click on it, and follow the onscreen instructions.

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