Quick install question

[ADEuk]

A friend of mine is coming over with a PS3 he has just purchased.
If we install GT5 to it using my disc will the game work with a second copy of the game that he will buy tomorrow? Or will he have to install again?

 

[Basilea]

A friend of mine is coming over with a PS3 he has just purchased.
If we install GT5 to it using my disc will the game work with a second copy of the game that he will buy tomorrow? Or will he have to install again?

Should work without any problems, as long as it is both the same region code.