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#11
You need either the Windows 10 install files or the Macrium Reflect Free rescue drive files to provide the boot files to make your recovery partition bootable. Now, you should be able to restart the computer into UEFI firmware:
UEFI Firmware Settings - Boot to from inside Windows 10 - Windows 10 Forums
The recovery partition should show up in the boot list. You still cannot recover the image created with Macrium Reflect, though, because that requires Macrium Reflect available when booting from the recovery partition. To get that, I would suggest you replace the Windows 10 Install boot.wim file in the \Sources folder with the boot.wim file from Kyhi's Recovery Tools.