With Mac OS X Lion and a new piece of free software, it’s easier than ever to create a USB keychain that you can boot from.

Has anyone tried dragging the “Install OS X Mavericks” App from the bootable USB Flash Drive w/ Recovery Partition, as outlined by TyWebb, back to the Mac’s Applications folder?

How to create a macOS Monterey USB Install drive for quick and easy installations of Apple's latest operating system for Mac.