The present invention relates to a wood-milling cutter. The machine includes cassette receiving means, an infeed mechanism a combining unit and an activating unit. The room beam coordinate system includes devices for generating laser beams intersecting at a single point that is spatially coincident with an iso-center of the treatment system. The housing has a receptacle configured to selectively receive a shield. The media may be housed within a disk drive that includes a transducing head to read information from the media, and a read channel to read information from the disk including the information associated with the first servo burst and the second servo burst.