How do you play Xbox360 games on Xbox360 that were already installed without disk?

Answer 1

You don't need live to save games to the hard drive the game will simply ask you to create a new games save and off you go. If you have a memory card too the game will give you a choice of which device to save your game on.

Answer 2

I have no knowledge of being able to play an Xbox game on an Xbox360 console without a hard drive. You are only able to play Xbox games on the Xbox360 Pro, Xbox360 Elite and the new Xbox360 Slim, not the Xbox360 Arcade. The three prior to the Arcade are provided with a hard drive. An Xbox360 Arcade, however, is not.

Answer 3

You have to go to the games library in the 'my xbox' menu page.