Create a bootable installer - Apple Support

Use an external drive or secondary volume as a startup disk from which to install macOS.

If your Mac starts up to an Apple logo or progress bar - Apple Support

How To Create a Bootable Installer for macOS - A Copy of macOS on

Where is Big Sur install file? - Apple Community

How to make a bootable USB installer for a Mac - Quora

Use an external storage device as a Mac startup disk - Apple Support

NEWB - COMMAND NOT FOUND

How to create an OS X El Capitan install disk on a flash drive - Quora

Instructions for El Capitan don't work - Apple Community

createinstallmedia - How To Create Bootable Installer for macOS

Some account services will not be available until you sign in again

How to Create a Bootable macOS Ventura USB Install Drive

My disk is gone in internet recovery mode - Apple Community

Monterey crashed my MacBook. How do I recover it back to Catalina?

OS X Tiger (PPC) Bootable USB Drive - Apple Community

How to download and install macOS – Apple Support (UK)