A recording and/or reproducing apparatus includes a recording medium accommodation table including recording medium accommodation portions each capable of accommodating a recording medium, a recording medium drive unit on which the recording medium is removably mounted and which is capable of performing recording and/or reproduction of an information signal onto and/or from it, a mechanical chassis that supports the recording medium accommodation table to freely rotate and also support the recording medium drive unit to be movable, a drive-moving unit that moves the recording medium drive unit closer to and away from the recording medium accommodation table, and a recording medium transport unit that transports the recording medium between a recording medium mounting and removing position of a recording medium-mounting portion and a recording medium accommodation position of the recording medium accommodation portions.