Your link shows Windows 7 on the unit. Could you explain the procedure you tried and what the results were, what messages did you get?
I know at least one company sells a combination drive like that. They should have a procedure for loading it, if one is needed, but I have not had such a setup.
You mention UEFI, are you using that install configuration?
Edit: The link, under the support section has a FAQ about updating the Bios. It seems to suggest you should, so you might check.