As far as I know and have seen, it works with the BIOS to choose a viable boot device as set in the BIOS, not after an option has been chosen and is running which is when the OS takes over a lot of the keyboard functions. The OS reads the BIOS to know what resources it provides and how to set them up with the appropriate drivers during loading.Why doesn't the F12 Boot Menu work in Windows 10 Pro (OS Build 18362.356).
Maybe that's why the MCT process automatically reformats a USB Thumb drive as FAT32?The UEFI settings may matter. If your USB drive is not UEFI-bootable disk, it won't appear in the boot menu.
That's correct. The USB drive should also contain UEFI bootloader.Maybe that's why the MCT process automatically reformats a USB Thumb drive as FAT32?
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