Is it possible to mirror the display during boot, as my screen is broken and I am unable to read it. I am needing to use the advanced startup menu
A closed lid should force the output to the external monitor.
Most laptops detect a closed lid with a magnet and a sensor. There is a small magnet probably somewhere on the top edge of the screen, and a sensor in the area of the body of the laptop that it would be near when closed.
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