Okay so, I got the Ultimate Edition of DAO and when I try to install Awakening it gives me an error saying I need an Xbox 360 HD. I have a 4GB elite Xbox 360! Why is this game not working?
I can't find any recent answers, but it appears that the 4GB model doesn't have enough space for the install (one site lists 4.1 GB as the install size).
http://www.gamefaqs.com/boards/984880-dragon-age-origins-awakening/58596209 suggests you'll have issues with any game of the year editions.
http://www.gamespot.com/xbox360/rpg/dragonage/show_msgs.php?pid=950918&topic_id=m-1-57112630 suggests using a USB device of some sort to install to (although it's not clear whether that will really work, and I personally install to my HD and use my USB drives for saves-only).
So, try a USB drive larger than 4 GB if you have one, otherwise you may not be able to do the install with your current drive.
The flash drive does not work.
I have tried installing the game directly onto the USB (16 GB) and that did not work, so I read somewhere that you could try to install the game and the expansion on a friends larger Xbox, and then move it onto the flash drive after it has been installed on the console, but that did not work either. It must be played on the Xbox it was originally installed on.