A disc apparatus includes a casing having an opening for insertion/ejection of a disc, a rotator for clamping and rotating the disc, a disc-transferring member, a head facing a recorded face of the disc and being movable in radial directions of the disc, a rack movable together with the head, a first pinion gear engageable with the rack, a motor for driving the first pinion gear; and a switching member moving between a transmission position and a cut-off position. The switching member connects a power transmission path for transmitting a driving force of the motor to the disc-transferring member when the switching member is in the transmission position, and cuts off the power transmission path when the switching member is in the cut-off position.