FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -The correct answer is Sectors. Tracks are frequently used to split the surfaces into concentric rings. Sectors are used to split tracks.

Detailed explanation-2: -The disk surface is logically divided into tracks, which are subdivided into sectors. A sector (varying from 32 bytes to 4096 bytes, usually 512 bytes) is the smallest unit of information that can be read from or written to disk. There are 4-32 sectors per track and 20-1500 tracks per disk surface.

Detailed explanation-3: -Tracks are subdivided into blocks (or sectors, pages) (see: Storage block and Virtual page). The term track is sometimes prefaced with the word logical (i.e. “3390-9 has 3 logical tracks per physical track") to emphasize that it is used as an abstract concept, not a track in the physical sense.

Detailed explanation-4: -Any hard disk may be partitioned as a single large drive, or split into two or more smaller drives. For example, a 10 gigabyte hard disk may be split into three: one 4G drive, and two 3G drives.