I was playing COD Black Ops yesterday morning with a friend. We were both at my house and were playing on my XBOX 360 S (no HDD) when another friend came, so we quit so he could join in. When we tried to start again, we got a message of "unreadable disk".
We cleaned it and tried again but didn't work. We tried another game FIFA 2011 and worked fine. The COD Black Ops disc doesn't seemed dirty or scratched, so we tried it on my old XBOX console (from the Arcade package, HDD 60 Gb) and the disc worked just fine.
Today, after browsing through some forums, I tried cleaning System's Cache but nothing, still not running.
I am supposed to receive my orderd HDD for this console on Thursday, and could try to install it, although I don't see this will be possible if the unit can not read the disc.
Any idea of what can be happening and what can I do?