A Magneto-optical drive is a disk drive for computers. It can read and write data to magneto-optical disks. The technology was made at the end of the 1980s. Both 5.25" and 3.5" media exist. The disks look like CD-ROMs, but they are protected with a plastic cover. The MiniDisc is a Magneto-optical disk. The other disks look similar but have a bigger physical size. 