A track is subdivided into sectors. To distinguish the sectors, they are sequentially addressed by natural numbers 0,1,2and so on.A sector is a primitive access unit.

 
  • 磁道又分为扇区,为了区分这些扇区,用0、1、2等给扇区按顺序编上地址号,一个扇区是一个基本的存取单位。
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