Magnetic Track of the Hard Disk Drive
As a result of recording the information by magnetic heads, magnetized areas in the shape of concentric circles occur on the surface of magnetic disks. They are called magnetic tracks. In other words, it is a set of sectors equidistant from the centre of rotation of magnetic disk. In order to increase the record density and decrease the time of positioning of magnetic heads, the tracks are positioned as close to each other as possible. However, the distance between them is not too close in order to avoid the creation of mutual noise.