#disk_drive__disc_drive__hard_drive__Winchester_drive  (computer science) computer hardware that holds and spins a magnetic or optical disk and reads and writes information on it
  supertype:  #drive.device  (computer science) a device that writes data onto or reads data from a storage medium
  part:  #hard_disc__hard_disk__fixed_disk__fixeddisk  a rigid magnetic disk mounted permanently in a drive unit

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