Trouble copying FlightSim 2000

[ponykiller]

I have flight sim 2000 professional install on my computer. I'm trying to make a copy of it. I used blindread/write and copied the disks. When I start the game it tries to verify the CD. When I insert the disk it says that it's the incorrect disk. Of course it works when i stick in the original.

I looked at the original disk and the copy i made. They appear to be the same. Anyone know what I'm missing?? I've read a lot of information about copying games with Safedisc protection, however, i must be missing something.