When I e.g. start Mass Effect (a backwards-compatible 360 game) on my Xbox One, it asks me what storage device I want to store saves on, but only gives me the option of using cloud storage. I don't want to do this, both because my Internet is spotty and because I'm letting my XBL Gold lapse at the end of the month. How can I make these 360 games see local storage on my Xbox One?
It would be OK if they could use a flash drive I plug into a USB port (though this solution is sub-optimal since I usually have three controllers plugged in), but I don't have a spare flash drive and don't want to buy one when I don't know if it will work.
It would be more ideal, then, if I could get 360 game data saving working with my XB1's internal storage, but OK if I can do it with a flash drive. Any help?