Traduction de l’étape 1
Choose Apple menu > Shut Down.
After your Mac shuts down, press Shift-Control-Option on the left side of the built-in keyboard, then press the power button at the same time. Hold these keys and the power button for 10 seconds. If you have a MacBook Pro with Touch ID, the Touch ID button is also the power button.
Release all keys. Press the power button again to turn on your Mac.