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Hard Disk

A hard disk uses magnetic platters coated to store data as patterns. The platters are stacked and spin on a spindle driven by a motor. An actuator moves read/write heads over the platters to write or read information as the platters rotate.

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108 views1 page

Hard Disk

A hard disk uses magnetic platters coated to store data as patterns. The platters are stacked and spin on a spindle driven by a motor. An actuator moves read/write heads over the platters to write or read information as the platters rotate.

Uploaded by

Lasitha
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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24

lesson
How a Hard Disk Works...
Spindle connected to electric motor
A hard disk uses round, flat Sealed protective metal housing
Magnetic disk platter
disks called platters, coated on
with a magnetic medium Actuator axis
designed to store information as
magnetic patterns. The platters
are stacked and mounted onto a
spindle. Driven by a special
motor connected to the spindle
the platters rotate at very high
Bus interface
connector

Read/write head
Magnetic disk platter arm actuator

Case mounting holes


Actuator arm

Read/write head Electromagnetic read/write


heads are used to either write
onto or read information from a
disk platter. The read/write head
are mounted on an arm, who's
position is controlled by an
actuator. A logic board controls
the drives activities and com-
municates with the connected
computer system.

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