There is no eject function in the menu and yes there is linux. Only used this new unit once and since My last post, I get no video on the screen from the camera or playback. Just the (quad) divided screen where the cams are, Just black quad screen & menu.... Worked great before. What a pain in the butt... Manual doesent tell a newbie anything. If I knew this would be such a pain, I never would have bought it, I guess thats what I get for a good deal...