A disk system miniaturized by sharing moving spaces of a disk clamper portion and a disk operating portion. The disk system includes a disk clamper portion (300) for holding a disk (R), the disk clamper portion (300) being provided in such a manner as to be movable substantially in parallel to a disk carrying path (102) on which the disk (R) is carried in a range from one end to the other end of the disk carrying path (102); and a disk operating portion (400) for rotating the disk (R), the disk operating portion (400) being provided in such a manner as to be movable substantially in parallel to the disk carrying path (102) in a range from one end to the other end of the disk carrying path (102).