Panasonic CF-Y2 Series Reference Manual page 91

Watching DVD Video (WinDVD)
91
DVD-RW recorded in the VR format can be played with the administrator authority only
Depending on the DVD recorder or the manufacturer of the media used for creation, it
may not be playable
Media in which digital broadcasts have been recorded using copyright management
technologies such as CPPM (Content Protection for Prerecorded Media) or CPRM
(Content Protection for Recordable Media) cannot be played back
Also, refer to "DVDs supported in this computer" ( page 71)