The correct answer is cylinder > Track > sector .Disk:Disk is a secondary storage device that is used to store data. Disks provide a means to store large amount of information for modern computer.A Disk is generally divided into:?TracksCylindersSectorsTracks:Tracks are the concentric circles on the magnetized surface of the magnetic disc.Sectors:The tracks on the disk service are divided into invisible segments called sectors.Tracks resemble the structure of annual rings of a tree.All the information stored on the hard disk is recorded in tracks.Each track is further broken down into smaller units called sectors.Data are transferred to and from the disk in sectors. Cylinders:A cylinder is allocated made up of the same track on the platters.If a platter contains 1200 tracks, there will be 1200 cylinders.Hard disks have cylinders.