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Hello everyone, today we are going to learn about the hard disk drives of the laptop

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A laptop's hard disk is one of the main storage devices in a computer

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The operating system, installation software, documentation, and so on are stored in the hard disk

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Common hard disk brands are Samsung, Seagate, Western Digital, Hitachi and so on

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Hard disk drives have two speeds: 7200 RPM and 5400 RPM are common

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At present, the common hard disk drive interface on the market is SATA interface,

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early IDE interface also

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The data of a hard disk drive is stored on an internal metal platter called a disk

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Data on a metal disk is stored permanently and is not easy lost

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Do not forcibly power off a hard disk when it is working

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Forcibly powering off a hard disk may cause physical damage,

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that is, physical bad sectors, and data loss

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When the hard disk is working, try to avoid shock

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Because it is working at a very high speed,

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the head is reading the data on the platter,

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and the head is very close to the platter

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If violent shaking occurs, the magnetic head will collide with the disk,

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causing a large area of bad sectors in the hard disk

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In serious cases, the magnetic head will be damaged,

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and the disk will be scratched, making the hard disk unable to work normally

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Inside the hard disk drive, in addition to the platter and the head,

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the main axis that drives the platter is the motor

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The one connected to the head is called the head swing arm,

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and the voice coil motor that turns the swing arm

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Ok, this is an introduction of hard sisk drives