Stop being reductive. Determinism and Fatalism are not the same thing!
Yet again I see a lot of posters saying they don't feel there is any meaningful difference between Determinism and Fatalism. This is my attempt at clearing things up. We'll do both the metaphysical and empirical differences between the two. Very generally, of course.
##### Metaphysical differences
Fatalism is dualistic. It pits you as an essential entity juxtaposed to the greater universe. It then goes on to say that you have no power in this relationship, and that the universe has all the power, which is why you have no agency and therefore no 'free will'. Under fatalism 'free will' makes sense as a concept, but you don't have it because the universe is all powerful.
Determinism is non-dual. It claims there is no essential difference between you and the rest of the universe. You are the universe and the universe is you. Since 'free will' is inherently dualistic in nature, it doesn't even make sense within a non-dual framework like Determinism, and so Determinism rejects 'free will' on the grounds that it is nonsensical to begin with.
##### Empirical differences
The two frameworks make distinct empirical predictions beyond just the metaphysics outlined above; in particular on the nature of knowledge.
Because Fatalism is dualistic, but also rejects 'free will', it is in the fairly unique position of making it possible to know the future. Since the universe is considered an external force acting upon you, there is no contradiction, under Fatalism, of having full knowledge of the future yet being doomed to act it out. This conception is likely why Fatalism often has such a negative connotation.
Determinism, on the other hand, predicts that complete knowledge of the future is impossible (even in principle). This is because the state of the present determines the future. Knowledge of the future is a property of the present, which in turn would influence the future; like a recursive function always keeping the true future one step ahead of present knowledge.