daspruit
1. Then you have too many games, lol. You could always get a 300 Gb HDD, or multiple drives (little bit more complicated)
2. Your friend will not be able to borrow a game off your hard drive, but you can just lend him the original!!
3. If your HDD fails, that's trouble.
4. I think you mean if you DON'T know what discs to use. You can always read the forums to find some compatable suggestions. Riteks are generally a safe bet.
carl25
No backups are playable on live, because to play backups you have to have your modchip enabled. If you have your modchip enabled and you go on Xbox Live, you will be banned.