I've been moving all of my Games over to my new External HDD and I've noticed that my Save Data is listed separately. Now, as any half-knowledgeable gamer knows, your save data is priceless and worth more than anything else on the console. Now, I may need to decline the new Xbox One update (that I stupidly agreed to) and be "reset to factory standard". I bought the External HDD because of this, but I don't know whether my save data is being moved over or backed up, or where it is located, and I really CANNOT afford to lose it under any circumstances!
I've never used Cloud Storage or configured it for either my 360 or my Xbox One, so, my question is : Where exactly is my save data located (Cloud Storage (even though I've never chosen to use it), Internal HDD or External HDD?), and how can I ensure that it remains safe even if I need to have my Xbox One "reset to factory standard"?
Any help would be appreciated.