I just installed FreeBSD on a GPT partition. On which is also installed Windows 8.1 and it's EFI partition with Windows Boot Manager. The FreeBSD installer auto-added another EFI partition with it's bootloader. I get my hands on it ('BOOTx64.efi') but now I have no idea how to include into the Windows Boot manager. I mean I can easily drop it into it's EFI partition but the problem is how to link it with BCDedit. I added a FWBOOTMGR and then I don't know what to do. There is even no documentation on what is this.