The concentric circles are known as tracks and the divided portion of each circle is called the sector. These disks are stacked one over the other on the same spindle.Įach disk has concentric circles and these circles are divided into sectors. The disk architecture consists of a circular disk with reading and writing head above and below each disk so that it can be read from both ways and they are kept on a spindle which keeps them rotating around for access to a particular part of the disk. So the first case tells that the disk management successfully read and write the data on the sector, the second case states that some of the data in the disk are written on the bad sector of the disk and therefore it can not be fully recovered and hence the name partial failure and the next case is the total failure where the data is completely lost without any chance to recover.

The disk management in operating systems can involve three major operations: first is the successful read-write operation, the next is the partial read-write operation and the last is a complete failure. To understand the disk management in the operating system we also have to understand the architecture of the disk and how this disk works.

Disk management in operating system