My daughter just mixed up my unlabeled DVD+RW's and I would like to know how to determine if a media has been burned or if it is still blank. I had 3 burned bad and set them aside. y daughter played with the spindle and mixed them up. Now, I don't know which among the 22 in the spindle are unused.
By the way, is it safe to use a felt tip pen to label DVD media?
Thanks in advance.