I always play all games from my modded xbox's hd (copied using dvd2xbox or complex tools) to save the dvd drive and of course to speed up loading, but I've had a problem with 3 games that all freeze during the initial loading (XIII, Pariah, Godzilla)
If someone can point me to a thread that covers some general troubleshooting for that problem, it'd be cool....unless certain games are known do do this. I couldn't find anything helpful yet with the few searches I did.
Unfortunately, I'm betting the solution will be to upgrade/modify my modded software....and it's been nearly a decade since I modded it and barely remember how to do anything. Hahahah...I only know that I did a software mod using a flaw in a game (Mechassault, was it?) and I boot right into unleash x...