» Fri May 04, 2012 9:23 am
I don't fully know how the GOTY edition for Fallout 3 works but if you're discussing that problem, best moving it to the Fallout 3 xbox issues section. But I'd assume if the DLC is on the disc you wouldn't need to install it on a HDD since the disc can store and run it.
Ultimate Edition will be released at a time after the Xbox slim, meaning it should have been tested to be compatible with it so you should be fine.