s/Disk/Disc for Digital Versatile Disc

modules/access/dvdnav.c

@@ -310,7 +310,7 @@ static int Open( vlc_object_t *p_this )
             msg_Err( p_demux, "cannot set title (can't decrypt DVD?)" );
             intf_UserFatal( p_demux, false, _("Playback failure"),
                             _("VLC cannot set the DVD's title. It possibly "
-                              "cannot decrypt the entire disk.") );
+                              "cannot decrypt the entire disc.") );
             dvdnav_close( p_sys->dvdnav );
             free( p_sys );
             return VLC_EGENERIC;

modules/access/dvdread.c

@@ -249,7 +249,7 @@ static int Open( vlc_object_t *p_this )
     {
         msg_Err( p_demux, "DVDRead cannot open source: %s", psz_name );
         intf_UserFatal( p_demux, false, _("Playback failure"),
-                        _("DVDRead could not open the disk \"%s\"."), psz_name );
+                        _("DVDRead could not open the disc \"%s\"."), psz_name );
         free( psz_name );
         return VLC_EGENERIC;
     }