The disk in the disk drive rotates at high speed, and heads in the disk drive are used only to read data.

The correct answer is B. False. False. The read/write heads in a hard disk drive (HDD) are used for both reading data from and writing data to the magnetic platters - not exclusively for reading. The platter spins at high speed (e.g., 5400-15000 RPM), and the heads float nanometers above the surface to…

Submitted by stefanr· Apr 18, 2026Disk Forensics

Question

Options

ATrue
BFalse

How the community answered

(47 responses)

A
6% (3)
B
94% (44)

Explanation

False. The read/write heads in a hard disk drive (HDD) are used for both reading data from and writing data to the magnetic platters - not exclusively for reading. The platter spins at high speed (e.g., 5400-15000 RPM), and the heads float nanometers above the surface to perform both operations by detecting and inducing magnetic field changes. A device that could only read would be a read-only medium (like a pressed CD-ROM), which is fundamentally different from a standard HDD.

Topics

#Hard Disk Drives (HDDs)#Disk components#Read/Write operations#Storage devices

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