在更新或者重装了MAC系统后，有时候系统会卡在“系统设置”这里，那么按如下操作解决。
- Turn off your Mac
- Connect your notebook to a power source
- Press and hold these keys at the same time: Shift-Control-Option keys and the power button
- Release everything (Shift-Control-Option keys, the power button)
- Turn on the computer