How do you play on disc 2 of star ocean the last hope

when you acquire the game it should come with 3 discs (for the xbox) when you make it to a certain point in the game it shows a screen asking for you to insert disc two. you press the open tray button on the xbox or on the controller menu. then insert the second disc, then close and wait a few seconds and there will be a loaded sound and the game should begin again.