Xbox 360 download and copy question?

so i hsv s flsdh drive connected to my xbox and after i done congfiguring it so i go to my harddrive and copy some games and map packs to my flas drive and than go to another xbox after i disconnect it can i still play there since i downloaded the saved data for the game and map packs i ha for it oh and if i dont hav a map pack and go to another xbox and they hav the map pack can i copy it to there and than copy it to my xbox and play that map pack with my profile gamer tag