Since the Retropie image is the best to use for emulation, but one of the many other images are better for other uses, I’m hoping someone eventually succeeds with a dual/multi boot option. There has been discussion, but that’s as far as it’s gone. With a large SD card, it would be convenient to be able to just boot into “emulation mode” when needed instead of swapping cards. That’s especially true since the SD card slot on the uConsole (or at least mine) is difficult to remove a card from easily.
If it’s just the menu for Retroarch that is rotated, that’s a known issue. See:
and the 4th bullet under the Retropie release here:
Correct Monitor rotation out the box. - retroarch menu cannot be rotated.