DIsc

Hey there Ssssporty Guy! When you're doing the solution that Wrath suggested, you don't have to download one item that's the same size, you can download multiple items that add up to at least the same size as the original item. That's just in case you ever
need to try that again.

It's possible that the title update simply needs to be redownloaded. To do that:

• Go to Settings > System > Storage, find the title update for Halo 3 and delete it.
  
• Clear your system cache.
  
• Restart your console.
• Start up Halo 3 again. It will probably prompt you to download the title update again, that's fine.
  

Let us know how that goes and if you continue to get the disc read errors after redownloading the title update.

We'll be standing by to hear from you. =)

Hi Ssssporty Guy,

Try following this guide to resolve your issue:

http://support.xbox.com/en-US/xbox-360/disc-drive/disc-unreadable-error-games-on-demand

Regards BoA

try deleting the game then cliking lisense transfer on your xbox then redownload the game m8

Hey again Hex! We ask that you stick to
your original thread so we can keep all relevant suggestions in one place. Thank you for your consideration!

No that didn't work and what a pain trying to find another game that was free AND the same size... Wouldn't recommend that to anybody. I had this problem with my halo disc as well. wasn't anything wrong with the disc but kept getting that damn disc unreadable
message. tried installing it and everything. Also i should mention that some of the interface has some faults... for example. Instead of saying "press RB to reload".. it says "press ▯ to reload" or "hold ▯ to swap with ▯". It's my favourite Halo game and i
feel gutted that it's not working for me. If it were the hard drive then surely other games wouldn't work?