Nem on 29 March 2014
I think you are confusing with the Xbox One. I dont think PS4 games need to be installed completely in the hard drive if you have the disc.
Tbh though, i have not looked on the harddrive to see if it installed. I think its optional, pretty much like the 360 had. I will look it up next time i have mine on. I have this faint impression that its a settings thing you can turn off.
