Help Please!!! Xbox 360 harddrive problems with backward compatibility

[Mysticheat]

My hard drive seems to be messed up because it can't load any backward compatibility games such as Halo 2. When i try to load the game it goes back to the dashboard and says,

"Unrecognized Disc - This disc is unreadable.

1. Clean The disc with a soft cloth.
2. Restart the console."

The weird thing is all my backward compatible games were working before and suddenly i get this error for all of them. I know my games havent been damaged all of a sudden. I'm sure it reads because it says the name of the game at the dashboard but it just will not load it. 360 games and DVDs work fine. Any suggestions?

 

[shrike4242]

Download the latest compatibility update from the Xbox site, burn it to a CDROM and stick the disc in your 360's drive. It should reload the update from the CD and hopefully fix the issue.

 

[Mysticheat]

*Update* -
It is the hard drive, i brought it over to a friend's house to tried it on his elite. When we tried his xbox games and my games the error came up too.

yeah so i just tried the update idea, it says i got the latest at first so then I deleted it from the hard drive to reinstall. I still get the same error, so fustrating. I wanted to try to update from Live but it needs to load the game to get the screen to download the update. It was a July update, I'll wait around if they come out with a new one. Thanks for the advice strike4242.

 

[shrike4242]

If it's the HD, then I think there's a way to reformat it back to factory spec, which should fix the issue. If not, then you'll need to call MS to get a replacement drive.