how can i copy my xbox games onto my xbox hard drive

hey my friend got his xbox modded and he told me that he can copy the entire game onto his xbox hard drive and never has to use the original game cd again. is this true? if so, then if i get my xbox modded, will i be able to do the same?

 

You can if you go to here and do some reading. It's not that difficult.
http://xbox-scene.com/tutorials.php?

 

i want to learn how to do it without modding my xbox

 

you can't