Help! My Xbox360 game is scratched

[Hotsauce]

step1: get game disc from friend.

step 2: turn on xbox 360 console

step 3: insert disc into disc tray

step 4: close disc tray

step 5: do not start game. if game starts automatically, hit the guide button and go back to xbox home

step 6: Press X (Game Details)

step 7: Move the left thumbstick to the right (to the box that says "install")

step 8: Press A

step 9: Wait until the bar fills up

step 10: Eject game

step 11: Put your scratched disc in the disc tray

step 12: Close disc tray

step 13: ???

This worked. Thank you very much man! Rep and Pie and tittays!