Start Mac in secure mode - Here's how

You can start your Mac in secure mode if necessary. To do this, you must hold down a key at a specific time during the start-up process.

Safe mode under MacOS

You need to press a specific key during startup. Here you have to pay attention to the start tone. You can only activate the safe mode when it sounds.

1. First, turn off your Mac computer.
2. Now start up your Mac computer and press the Shift key after the startup sound. Be careful not to press the button before the sound. Hold down the Shift key until the gray Apple sign and rotating gear appear.
3. Then you are in the registration menu and select the desired user. After the registration process you are in secure mode.

You can find out how to switch off the start sound under MacOS here.