This article offers an introduction to the number of sectors.
The number of disc on hard disks with different capacity is different.
Every disc has two sides to record information.
Disc is divided into many sector areas.
Each area is called a sector, which is the smallest storage unit on hard disk.
Generally speaking, every sector can store 512 bytes of information.
Some hard disk manufactures and software developers are planning to develop new standard every sector stores 4096 bytes information.
Hard disk capacity = cylinder number * head number * sector number * 512 bytes.
