Xbox 360 Backward Compatibility Issues
The Xbox 360 hard drive uses a special partition to run Xbox games. Compatibility issues with the Xbox 360 usually occur when you replace the Xbox 360 hard drive. If you bought your console used or refurbished, the hard drive could have been swapped out before you purchased it. This is a common problem reported by players who buy from eBay. To make more money, some eBay sellers buy consoles with official 20GB Microsoft hard drives for cheap and replace them with larger laptop hard drives. That way, they can then sell them for less than an official drive of the same size would be and still make a profit. While these hacked hard drives will function exactly the same as an official drive, most of them are missing the partition necessary to run Xbox games.
The Xbox 360 Slim and Other Models
Original Xbox games work on the Xbox 360 Slim and other models with one exception: The 4GB version of the 360 Slim is not backward compatible. The 4GB Slim doesn’t actually have a hard disk drive, so you’ll have to install one with the appropriate partition to play original Xbox titles.
Xbox 360 and Xbox Compatibility List
While nearly every original Xbox title is compatible with the 360, there are a few exceptions. Microsoft has released a full list of Xbox games that work on Xbox 360. If you don’t see the game you want to play listed, then you’re out of luck. Although the Xbox 360 is backward compatible, it can’t connect to the Xbox network while playing Xbox games. This is because Xbox network support has been discontinued for the original Xbox.
