What is Magnetic disk

Magnetic disk

Magnetic disk is the most widely used storage media.A magnetic disk is a thin circular metal plate/platter coated with magnetic material.Information can be recorded on or read from the magnetic surface.magnetic disk must format before magnetic disk can used.
After the formatted disk then you can store data in magnetic disk.Formatting is a process that creates tracks and sectors on the disk.Each track on a disk is divided into sectors.Any sector holds a specific number of characters.A sector is the smallest physical storage unit on a disk.Its size normally 512 bytes.
Two or more sectors combine to from a cluster .A cylinder consists of all tracks of the same number.Every cylinder contains the same number of sectors.