Quoting Olaf Meeuwissen from preceding post:
"I didn't have to do any of the things mentioned in the forum post above."

For the sake of clarity which disk format did you use: MBR or GPT?
That forum thread makes it clear that using GPT on that machine does
not work with legacy boot.

Thanks.

--
If you can't explain it simply, you don't understand it well enough.
(Albert Einstein)
If you cannot make abstructions about details you do not understand
the concepts underlying them.