My related problem was that GRUB2 would not recognize a USB keyboard. I discovered a BIOS setting for USB keyboard support (document says for DOS mode) that was Disabled by default. Enabling that feature fixed my problem.
My related problem was that GRUB2 would not recognize a USB keyboard.
I discovered a BIOS setting for USB keyboard support (document says for DOS mode) that was Disabled by default. Enabling that feature fixed my problem.