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sudo mkdir -p /mnt/efi && sudo mount /dev/nvme0n1p1 /mnt/efi
sudo mkdir -p /mnt/win && sudo mount /dev/nvme0n1p3 /mnt/win
sudo grub-install --target=x86_64-efi --efi-directory=/mnt/efi --bootloader-id=Windows --no-nvram
sudo cp -r /mnt/win/Windows/Boot/EFI/* /mnt/efi/EFI/Microsoft/Boot/ 2>/dev/null
sudo efibootmgr -c -d /dev/nvme0n1 -p 1 -l '\EFI\Microsoft\Boot\bootmgfw.efi' -L "Windows Boot Manager"