I have burned a DVD, I noticed after burning a big black smeary mark on the back the same colour as the unburned bit on the outer edge.
I done a surface scan with CD/DVD speed and it had no problems.
Then done the transfer rate test and the lines went right down to the bottom where the mark was on the cd.
I thought that if the surface scan displayed the dvd being 100% the files have 100% of their data with no loss and you can copy them back.
Looking at the back of the dvd and the transfer rate results it doesnt look like i would have 100% of the data on the disc.
Can it still display it really bad in the transfer test but then if i play the file back it will still be 100% ok?