A client has send me a stack of DVD's from which I was supposed to move video onto an internet server. Looking at the disks, they are obviously written on -- you can see the color differnece on the write side -- but they show up as blank on both Mac OS X and Windows XP systems. I suspect the client wrote the data but didn't complete the process, what ever final step was needed to write the index to the disk. Is there a way to retreive the data off these disks or do I need to have the client re-burn these disks and re-mail them? Thanks for any suggestions.