i enjoy dvd drive within my workstation but some dvd diskets it does not certify.how can i operate those on workstation.?

i enjoy dvd drive within my workstation but some dvd diskets it does not certify.how can i operate those on workstation.?

label sure you have a dvd drive, not a cd drive, and take home sure that you are using dvds that have information on them, not blank disks (unless you're trying to write to blank disks)