Can You Take a Hard Drive From One Pc to Another
Hard drive
Updated: 08/02/2020 past Figurer Hope
A hard disk (sometimes abbreviated as a difficult drive, HD, or HDD) is a non-volatile data storage device. It is ordinarily installed internally in a computer, attached directly to the deejay controller of the estimator'south motherboard. It contains 1 or more platters, housed inside of an air-sealed casing. Data is written to the platters using a magnetic head, which moves rapidly over them as they spin.
Internal hard disks reside in a drive bay, continued to the motherboard using an ATA, SCSI, or SATA cable. They are powered past a connection to the figurer'southward PSU (ability supply unit).
Examples of data stored on a computer's hard drive include the operating organisation, installed software, and the user'due south personal files.
Why does a reckoner need a hard drive?
A computer requires an operating system to allow users to collaborate with and use information technology. The operating organization interprets keyboard and mouse movements and allows for the employ of software, like an Cyberspace browser, word processor, and video games. To install a estimator operating system, a hard drive (or another storage device) is required. The storage device provides the storage medium where the operating system is installed and stored.
A difficult drive is as well required for the installation of any programs or other files you desire to proceed on your computer. When downloading files to your figurer, they are permanently stored on your hard drive or some other storage medium until they are moved or uninstalled.
Can a estimator work without a difficult drive?
Without a difficult drive, a computer can turn on and Postal service. Depending on how the BIOS is configured, other bootable devices in the boot sequence are also checked for the necessary boot files. For instance, if the USB device is listed in your BIOS kick sequence, y'all can boot from a bootable USB flash drive in a figurer without a hard drive.
Examples of bootable flash drives include a Microsoft Windows installation disk, GParted Live, Ubuntu Live, or UBCD. Some computers also support booting over a network with a PXE (preboot execution environs).
Hard drives in mod computers
Modern computers frequently use an SSD (solid-state drive) every bit the primary storage device, instead of an HDD. HDDs are slower than SSDs when reading and writing information, but offer greater storage capacity for the cost.
Although an HDD may nonetheless be used equally a computer's principal storage, information technology'due south mutual for it to be installed as a secondary disk drive. For example, the primary SSD may contain the operating system and installed software, and a secondary HDD may be used to store documents, downloads, and audio or video files.
Tip
New reckoner users may confuse RAM (memory) with their disk drive. Unlike an HDD or SSD, RAM is a "volatile" data storage device, meaning information technology tin store data only when the computer is powered on. Come across our retentivity definition for a comparison between retention and disk storage.
Hard drive components
As shown in the movie above, the desktop hard drive consists of the following components: the head actuator, read/write actuator arm, read/write caput, spindle, and platter. On the back of a hard bulldoze is a circuit lath called the disk controller or interface board. This circuit is what allows the hard bulldoze to communicate with the computer.
How is a hard bulldoze connected to a computer?
An internal difficult bulldoze connects to the computer using two means: a data cable (IDE, SATA, or SCSI) to the motherboard and a power cable to the power supply.
Where is the hard bulldoze found in a reckoner?
All primary computer difficult drives are found inside a computer case and are attached to the computer motherboard using an ATA, SCSI, or SATA cablevision. Difficult drives are powered past a connectedness to the PSU (power supply unit).
Annotation
Some portable and desktop computers may have newer flash drives that connect directly to the PCIe interface or another interface and not use a cablevision.
What is stored on a hard bulldoze?
A hard drive can shop any data, including pictures, music, videos, text documents, and any files created or downloaded. Also, hard drives shop files for the operating system and software programs that run on the computer.
What are the sizes of hard drives?
The difficult drive is oftentimes capable of storing more than data than whatsoever other drive, only its size tin can vary depending on the type of drive and its age. Older hard drives had a storage size of several hundred MB (megabytes) to several GB (gigabytes). Newer hard drives have a storage size of several hundred gigabytes to several TB (terabytes). Each year, new and improved technology allows for increasing hard drive storage sizes.
Notation
If yous are trying to discover the physical dimensions of a hard bulldoze, their concrete sizes are either 3.5" for desktop computers or two.five" for laptops. SSDs range from ane.viii" to five.25".
How is data read and stored on a hard drive?
Information sent to and read from the hard drive is interpreted past the disk controller. This device tells the hard drive what to exercise and how to motility its components. When the operating organisation needs to read or write information, it examines the hard drive's Fatty (File Allocation Table) to determine file location and available write areas. Once that is adamant, the disk controller instructs the actuator to motility the read/write arm and align the read/write caput. Because files are often scattered throughout the platter, the head needs to move to different locations to admission all data.
All information saved and stored on a traditional hard drive, similar the higher up example, is done magnetically. Later completing the above steps, if the computer needs to read information from the hard drive, it would read the magnetic polarities on the platter. Ane side of the magnetic polarity is 0, and the other is 1. Reading this every bit binary data, the computer tin empathize what the data is on the platter. For the figurer to write information to the platter, the read/write head aligns the magnetic polarities, writing 0's and 1's that can be read afterward.
External and internal hard drives
Although near hard drives are internal, there are also stand-solitary devices called external hard drives or portable hard drives that backup data on computers and expand the available space. External drives are oftentimes stored in an enclosure that helps protect the drive and allows information technology to interface with the computer, usually over USB, eSATA, or FireWire. An fantabulous example of an external backup device that supports multiple hard drives is the Drobo.
External difficult drives come in many shapes and sizes. Some are large, well-nigh the size of a book, while others are virtually the size of a big smartphone. External hard drives can be very useful since they usually offer more space than a bound drive and are still portable. The picture is an example of a laptop hard disk enclosure from Adaptec. With this enclosure, the user installs a laptop hard drive of any storage chapters into the enclosure and connect it via USB port to the computer.
HDD being replaced past SSD
SSDs (solid-state drives) have started to replace HDDs (hard disk drive drives) because of the distinct performance advantages they accept over HDD, including faster admission times and lower latency. While SSDs are becoming popular, HDDs keep to exist used in many desktop computers largely due to the value per dollar that HDDs offering over SSDs. However, more and more laptops are beginning to apply SSD over HDD, helping to improve the reliability and stability of laptops.
History of the hard bulldoze
The offset hard drive was introduced to the marketplace by IBM on September 13, 1956. The hard drive was showtime used in the RAMAC 305 system, with a storage capacity of 5 MB and a toll of most $l,000 ($ten,000 per megabyte). The hard drive was built-in to the computer and was not removable.
In 1963, IBM adult the kickoff removable difficult drive, having a ii.6 MB storage capacity.
The first difficult drive to have a storage chapters of one gigabyte was also developed past IBM in 1980. It weighed 550-pounds and price $40,000.
1983 marked the introduction of the first three.5-inch size hard drive, developed by Rodime. It had a storage capacity of 10 MB.
Seagate was the first company to innovate a 7200 RPM hard drive in 1992. Seagate also introduced the first x,000 RPM difficult bulldoze in 1996 and the beginning fifteen,000 RPM difficult drive in 2000.
Should I say "hard disk drive" or "difficult drive"?
Both "hd" and "hard drive" are right and mean the same thing. However, nosotros recommend using the term "difficult bulldoze" in your writing or when describing a hard drive. The term "hard drive" helps to distinguish information technology from an SSD (solid-state bulldoze), which contains no platters, disk-shaped components, or moving parts.
Computer acronyms, Difficult drive terms, Hardware terms, Hybrid hard drive, Storage device, VHD
Source: https://www.computerhope.com/jargon/h/harddriv.htm
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