zlacker

Windows and GRUB will both compete for who gets to own \EFI\boot\bootx64.efi; but that file is only used when you tell your firmware "boot off this hard drive".

If Windows is removing another OS's entries from the boot list (displayed when you run 'efibootmgr -v' in Linux) then that's 100% deliberate anticompetitive behaviour from Microsoft; this list is where the entires like Windows, Fedora, and so on appear in the list of boot entries your firmware shows you.