Please don't tell me this is the only copy.
I had archived some data on a dvd about a year back. Now I find that the data could not be read completely. I had picked up the data from a Linux based CVS Repository and also from a Windows XP based system. How do we verify the data if they are correct? I give below 3 of them. More comments required.
1. While copying the data into a DVD, we can use "Verify" option of the tool that is being used to transfer data. Ex. Nero Burner.
2. A CRC can be generated for each file and compared after the data is transferred
3. After the data transfer, the same can be copied back to an alternate location
4. Since the files are in a compressed mode (.zip / .tar), they zip tool can check the files for any issues.
Is there any fool proof way to do this ?