read Compact Disk data ( bits) by address

[sue852]

hello

I need to read Compact Disk  data ( bits) by address, in my labview program
in a way that I can recognize damaged bits address too .
 
what  ways exist for that?

please guide me

thanks.

[unclebump]

Ca you include some CRC data when it is saved to the CD?? Does the cd contain a single file or several files??

[sue852]

it is not too important for me
actualy, purposely I damaged the surface of cd.and i want to  know  damaged bits address.
I want to use this information to lock my labview program from being copied
illegally.
thanks