[ubuntu] Lost DVD drive from Launcher: howto remount drive?

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http://ubuntuforums.org – Just upgraded to 12.10 and had dvd working fine using VLC. I was toying with launcher when I noted that the icon for the drive had changed from disc going into drive, to an external drive looking icon. so, I unlocked it from launchbar and ever since, VLC won't play dvds coz it can't "see" my dvd drive... anyone? thx, Deus Abs (Hardware)