Whether it's to fix problems with your Mac, or get it ready to sell on to someone else, macOS Recovery, also known as Mac Recovery Mode, is a powerful tool to help you.

To boot into safe mode, turn your Mac off. Turn it back on while holding the power button until Recovery Mode opens. Click on Macintosh HD once, then hold Shift and click Continue in Safe Mode.

Apple Silicon Macs will introduce a new system for accessing macOS recovery and security options at startup, Apple explained at a WWDC session on Wednesday.