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Posted by / 09-Aug-2017 22:02

The IBM PC/XT in 1983 included an internal 10 MB HDD, and soon thereafter internal HDDs proliferated on personal computers.External HDDs remained popular for much longer on the Apple Macintosh.Data is accessed in a random-access manner, meaning that individual blocks of data can be stored or retrieved in any order and not only sequentially.HDDs are a type of non-volatile storage, retaining stored data even when powered off.

Instead, the heads were allowed to "land" on a special area of the disk surface upon spin-down, "taking off" again when the disk was later powered on.is a data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks (platters) coated with magnetic material.The platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces.Non-removable HDDs were called "fixed disk" drives.Some high-performance HDDs were manufactured with one head per track (e.g.

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