How to disable mouse at dualboot

BUR-Denmark 1 Reputation point
2021-08-19T06:14:49.057+00:00

I have made a setup using dual-boot. When the PC boots it waits 5 seconds and then boots to standard Windows 10 Pro. No problem, it works.
However, I would very much like to disable the mouse in the 5 seconds pause. I hope using regedit and changing something can do the trick. The result I want: Choose OS using only keyboard.
If you ask why: If someone, by accident, moves the mouse in the 5 seconds delay, the countdown stops.

Windows 10
Windows 10
A Microsoft operating system that runs on personal computers and tablets.
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