As we all know, almost every video game console's emulator on computer is free to use. Whereas due to copyright issues, the emulator's developer can not provide us with those corresponding BIOS files that play a vital role in the game emulation.
UEFI is unknown for most PC users, to fully understand it, you can use Google. Or you can also simply see it as a substitute of BIOS, which is much more advanced than the latter. However, the appearance of this new thing has brought many new problems to "Windows + Linux" dual systems. Fortunately, EasyUEFI can help us.