How do I erase Ryse save data?

[JGarret]

kowenicki said:

Memory management isn't fully implemented yet.

However, on "home", select the Ryse tile and click the "Menu" button, this will give an uninstall option. But that will also uninstall the game. This is probably the only solution for now until the memory management is patched.

I see.Hopefully there´s a patch that fixes that very soon.

Another question.. I see that all games, even on disc, require a mandatory installation, so once a game is fully installed, do I need the disc in the console to play it?