command line - Verbose Mode is dropped on macOS Sierra? - Ask Different
What are the useful nvram settings in macOS ?
David Maynor on X: "If you are a mac osx user and ever bored open a terminal and do sudo nvram boot-args=”-v” before applying a patch. You get the see the boot process instead of just the apple logo and progress bar. https://t.co/yFHc9mILQl" / X
How to start any Mac in safe mode - Android Authority