I am trying to disable my laptop internal keyboard, because I want to use my USB external keyboard placing it above the laptop keyboard.
I am using GRUB to dual-boot Linux and Windows. I could disable the internal keyboard after booting, both Linux(via xinput) and Windows(via installing wrong driver for the internal keyboard).
But when selecting OS in GRUB, the laptop keyboard works normally. What should I do in order to disable the laptop internal keyboard in GRUB?
p.s. I don't want to physically remove the laptop keyboard like disconnecting it from motherboard.