Battlefield 4 for Xbox 360 requires a mandatory 2 gig install, this installation must be on a 360 HDD and cannot be on a USB EA reports.
There are additional installs but they are not required. EA advises that you install them so you can have a very awesome Battlefield 4 experience.
- The Multiplayer Disc, or Disc 1, has an additional 6.6 GB of content
- The Single Player Disc, or Disc 2, has 5.8 GB of installation content