A disk or disc (see below) is anything that resembles a flattened cylinder in shape. More specifically: In biology, an intervertebral disc is a cartilaginous joint between vertebrae in the spine of vertebrate animals. In mathematics, a disk is a geometrical object. See Disk (mathematics). A gramophone record (commonly "phonograph record" in U.S. English) is an analogue sound recording disc used on a gramophone or phonograph. It consists of a long spiral groove in on a side of a platt ...

Including:

Disk - Disc or disk?

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Disk magazine, Disk magazine - Defining characteristics, Disk magazine - Precursors, Disk magazine - Disk magazines in the 1980s, Disk magazine - Disk magazines in the 1990s, Disk magazine - Disk magazines in the 2000s, Disk magazine - Types of disk magazine content

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The occasional CD- or DVD-based multimedia magazine has come out since 2000, though more often as a promotional gimmick than a self-sustaining publication. More effort has lately gone into creating and promoting Web sites, e-zines, blogs, and e-mail lists than physical-medium-based publications. Some publications that are termed "diskmags" are today distributed through the internet (FTP, WWW, IRC, et cetera). The longest-lasting disk magazine is, surprisingly enough, for the long-obsolete Commodore 64 computer; Loadstar, origin ...

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Disk magazine, Disk magazine - Defining characteristics, Disk magazine - Precursors, Disk magazine - Disk magazines in the 1980s, Disk magazine - Disk magazines in the 1990s, Disk magazine - Disk magazines in the 2000s, Disk magazine - Types of disk magazine content

Read more here: » Disk magazine: Encyclopedia II - Disk magazine - Disk magazines in the 2000s

COLD stands for Computer Output to Laser Disk. COLD systems are used to capture, archive, store, and retrieve data such as accounting reports, loan records, inventories, shipping and receiving documents, and customer bills. These systems are typically implemented to replace paper creation and microfiche solutions. COLD systems usually work by capturing data from print streams and storing it on hard drives, storage area networks, or optical disk drives. The data is then retrieved via web browsers or f ...

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Disk formatting - Low-level formatting. Warning: The below information on low-level formatting of floppy disks may be technically incorrect. The process is most easily seen with a standard 1.44MB PC floppy disk. Low-level formatting of the floppy normally writes 18 sectors of 512 bytes each on each of 160 tracks (80 on each side) of a floppy disk. That provides 1,474,560 bytes of storage on the floppy. This means that the actual storage capacity of the disk is 1.40625MB. (Sectors are actually larger ...

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Disk formatting, Disk formatting - Formatting a floppy disk, Disk formatting - Low-level formatting, Disk formatting - High-level formatting, Disk formatting - Formatting a hard disk drive, Disk formatting - Low-level formatting

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The acronym DOS stands for disk operating system, an operating system component for computers that provides the abstraction of a file system resident on hard disk or floppy disk secondary storage. In some cases, the disk operating system was called DOS, and on the PC compatible platform, an entire family of operating systems was called DOS. DOS - DOS for IBM PC compatibles. In particular, DOS refers to the family of closely related operating systems which dominated the IBM PC compatible ...

Including:

DOS - DOS for IBM PC compatibles
DOS - Accessing hardware under DOS DOS - DOS and other PC operating systems DOS - Reserved device names under DOS DOS - Drive naming scheme
DOS - DOS for other computers

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The divergence in spelling is due in part to the way in which the words originated. Disc came into the English language in the mid-17th century, from the Latin discus, and like already-existing words like whisc or risc, it was spelled with c; disk arose some time later, and was based on the original Greek root diskus. In the 19th century, disk became the conventional spelling for audio recordings made on a flat plate, such as the gramophone record; this usage gave rise to the modern ter ...

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Disk, Disk - Disc or disk?

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Early home and hobby users of personal computers in the late 1970s and early 1980s sometimes typed in programs, usually in the BASIC language, which were published in the computer magazines of the time. This was a lot of work, and prone to error, so the idea of publishing a magazine directly on a computer-readable medium so that the programs could be run directly without typing came independently to several people. Some ideas of putting bar codes into paper magazines, which could be read into a computer with the appropriate peripheral ...

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Disk magazine, Disk magazine - Defining characteristics, Disk magazine - Precursors, Disk magazine - Disk magazines in the 1980s, Disk magazine - Disk magazines in the 1990s, Disk magazine - Disk magazines in the 2000s, Disk magazine - Types of disk magazine content

Read more here: » Disk magazine: Encyclopedia II - Disk magazine - Precursors

The Diamond Disks can be easily distinguished from early 78 records, as Diamond Disk records are approximately 1/4 inches thick. All Diamond Disks have an Edison Records label. The sound quality is notably clearer on later electrically-recorded Diamond Disks than on any contemporary conventional record. Earlier Diamond Disks have poorer sound; these can be identified by their black embossed labels, compared to the printed labels on later disks. The discs made during World War I are of the lowest sound qua ...

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Diamond Disk, Diamond Disk - Identifying Diamond Disks

Read more here: » Diamond Disk: Encyclopedia II - Diamond Disk - Identifying Diamond Disks

A hard disk uses rigid rotating platters (disks). Each platter has a planar magnetic surface on which digital data may be stored. Information is written to the disk by transmitting an electromagnetic flux through an antenna or read-write head that is very close to a magnetic material, which in turn changes its polarization due to the flux. The information can be read by a read-write head which senses electrical change as the magnetic fields pass by in ...

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Hard disk, Hard disk - Mechanics, Hard disk - Access and interfaces, Hard disk - Other characteristics, Hard disk - Addressing modes, Hard disk - Manufacturers, Hard disk - Firms that have come and gone, Hard disk - Marketing capacity versus true capacity, Hard disk - Hard disk usage, Hard disk - History, Hard disk - Timeline of capacity and other technical improvements, Hard disk - 1950s, Hard disk - 1960s, Hard disk - 1970s, Hard disk - 1980s, Hard disk - 1990s, Hard disk - 2000s, Hard disk - Derivative technologies

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The first hard disk drive was the IBM 350 Disk File, invented by Reynold Johnson and introduced in 1955 with the IBM 305 computer. This drive had fifty 24 inch platters, with a total capacity of five million characters. A single head was used for access to all the platters, making the average access time very slow. The IBM 1301 Disk Storage Unit, announced in 1961, introduced the usage of a separate head for each data surface. The first disk drive to use removable media was the IBM 1311 drive, which used the IBM 1316 disk ...

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Hard disk, Hard disk - Mechanics, Hard disk - Access and interfaces, Hard disk - Other characteristics, Hard disk - Addressing modes, Hard disk - Manufacturers, Hard disk - Firms that have come and gone, Hard disk - Marketing capacity versus true capacity, Hard disk - Hard disk usage, Hard disk - History, Hard disk - Timeline of capacity and other technical improvements, Hard disk - 1950s, Hard disk - 1960s, Hard disk - 1970s, Hard disk - 1980s, Hard disk - 1990s, Hard disk - 2000s

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Most of the world's hard disks are now manufactured by just a handful of large firms: Seagate, Maxtor (now owned by Seagate), Western Digital, Samsung, and Hitachi, the former drive manufacturing division of IBM. Fujitsu continues to make specialist notebook and SCSI drives but exited the mass market in 2001. Toshiba is a major manufacturer of 2.5-inch and 1.8-inch notebook drives. Hard d ...

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Hard disk, Hard disk - Mechanics, Hard disk - Access and interfaces, Hard disk - Other characteristics, Hard disk - Addressing modes, Hard disk - Manufacturers, Hard disk - Firms that have come and gone, Hard disk - Marketing capacity versus true capacity, Hard disk - Hard disk usage, Hard disk - History, Hard disk - Timeline of capacity and other technical improvements, Hard disk - 1950s, Hard disk - 1960s, Hard disk - 1970s, Hard disk - 1980s, Hard disk - 1990s, Hard disk - 2000s, Hard disk - Derivative technologies

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Before Windows 95, some computer manufacturers used hardware disk copying machines to copy software. This had the disadvantages of copying not just the used data on the disk, but also unused sectors, as the hardware used was not aware of the structures on the disks, and usually required the disks to be copied before being inserted into the machines. A larger hard disk could not be copied to a smaller one, and copying a smaller one to a larger left the remaining space on the new disk unused. The ...

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Disk cloning, Disk cloning - History, Disk cloning - Post Cloning Operations, Disk cloning - Operating Environment, Disk cloning - Image Transfer, Disk cloning - Image Manipulation

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A hard disk uses rigid rotating platters (disks). Each platter has a planar magnetic surface on which digital data may be stored. Information is written to the disk by transmitting an electromagnetic flux through an antenna or read-write head that is very close to a magnetic material, which in turn changes its polarization due to the flux. The information can be read by a read-write head which senses electrical change as the magnetic fields pass by in ...

See also:

Hard disk, Hard disk - Mechanics, Hard disk - Access and interfaces, Hard disk - Other characteristics, Hard disk - Addressing modes, Hard disk - Manufacturers, Hard disk - Firms that have come and gone, Hard disk - Marketing capacity versus true capacity, Hard disk - Hard disk usage, Hard disk - History, Hard disk - Timeline of capacity and other technical improvements, Hard disk - 1950s, Hard disk - 1960s, Hard disk - 1970s, Hard disk - 1980s, Hard disk - 1990s, Hard disk - 2000s

Read more here: » Hard disk: Encyclopedia II - Hard disk - Mechanics

Most of the world's hard disks are now manufactured by just a handful of large firms: Seagate, Maxtor (now owned by Seagate), Western Digital, Samsung, and Hitachi, the former drive manufacturing division of IBM. Fujitsu continues to make specialist notebook and SCSI drives but exited the mass market in 2001. Toshiba is a major manufacturer of 2.5-inch and 1.8-inch notebook drives. Hard d ...

See also:

Hard disk, Hard disk - Mechanics, Hard disk - Access and interfaces, Hard disk - Other characteristics, Hard disk - Addressing modes, Hard disk - Manufacturers, Hard disk - Firms that have come and gone, Hard disk - Marketing capacity versus true capacity, Hard disk - Hard disk usage, Hard disk - History, Hard disk - Timeline of capacity and other technical improvements, Hard disk - 1950s, Hard disk - 1960s, Hard disk - 1970s, Hard disk - 1980s, Hard disk - 1990s, Hard disk - 2000s

Read more here: » Hard disk: Encyclopedia II - Hard disk - Manufacturers

Unlike the line resolution provided by a Nipkow disk, which is potentially very high, the maximum number of scanlines is much more limited, and precisely, it's equal to the number of holes on the disk, which in practice was comprised between 30 and 100, with rare 200-hole disks tested. Another serious disadvantage when reproducing images with the aid of a Nipkow disk, is that the images are typically very small, as small as the surface used for scanning, and which on the practical implementations of mechanical television was the size of a po ...

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Nipkow disk, Nipkow disk - Physical description, Nipkow disk - How it works, Nipkow disk - Usage and applications, Nipkow disk - Disadvantages, Nipkow disk - Applications

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The first hard disk drive was the IBM 350 Disk File, invented by Reynold Johnson and introduced in 1955 with the IBM 305 computer. This drive had fifty 24 inch platters, with a total capacity of five million characters. A single head was used for access to all the platters, making the average access time very slow. The IBM 1301 Disk Storage Unit, announced in 1961, introduced the usage of a separate head for each data surface. The first disk drive to use removable media was the IBM 1311 drive, which used the IBM 1316 disk ...

See also:

Hard disk, Hard disk - Mechanics, Hard disk - Access and interfaces, Hard disk - Other characteristics, Hard disk - Addressing modes, Hard disk - Manufacturers, Hard disk - Firms that have come and gone, Hard disk - Marketing capacity versus true capacity, Hard disk - Hard disk usage, Hard disk - History, Hard disk - Timeline of capacity and other technical improvements, Hard disk - 1950s, Hard disk - 1960s, Hard disk - 1970s, Hard disk - 1980s, Hard disk - 1990s, Hard disk - 2000s, Hard disk - Derivative technologies

Read more here: » Hard disk: Encyclopedia II - Hard disk - History

A common use of disk images is for remote distribution of software such as Linux distributions: installation floppy disks or CD-ROMs can be recorded as disk image files, transferred over the Internet, and the contents of the original disk(s) duplicated exactly by end users with their own floppy or CD-R drives, so users can burn the ISO images to convert them into LiveCDs to try an operating system without installing it in the hard disk . Disk images are also routinely used in connection with software piracy, creating an image of a software packa ...

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Disk image, Disk image - CD sector size FAQ, Disk image - Common formats, Disk image - .CUE/.BIN, Disk image - .ISO, Disk image - .IMG, Disk image - Apple Disk Image, Disk image - Usage

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Most of the world's hard disks are now manufactured by just a handful of large firms: Seagate, Maxtor (now owned by Seagate), Western Digital, Samsung, and the former drive manufacturing division of IBM, now owned by Hitachi. Fujitsu continues to make specialist notebook and SCSI drives but exited the mass market in 2001. Toshiba is a major manufacturer of 2.5-inch and 1.8-inch notebook drives. Hard d ...

See also:

Hard disk, Hard disk - Mechanics, Hard disk - Access and interfaces, Hard disk - Other characteristics, Hard disk - Addressing modes, Hard disk - Manufacturers, Hard disk - Firms that have come and gone, Hard disk - Marketing capacity versus true capacity, Hard disk - Hard disk usage, Hard disk - History, Hard disk - Timeline of capacity and other technical improvements, Hard disk - 1950s, Hard disk - 1960s, Hard disk - 1970s, Hard disk - 1980s, Hard disk - 1990s, Hard disk - 2000s

Read more here: » Hard disk: Encyclopedia II - Hard disk - Manufacturers

The 5¼-inch disk had a large circular hole in the center for the spindle of the drive and a small oval aperture in both sides of the plastic to allow the heads of the drive to read and write the data. The magnetic medium could be spun by rotating it from the middle hole. A small notch on the right hand side of the disk would identify whether the disk was read-only or writable, detected by a mechanical switch or photo transistor above it. Another LED/phototransistor pair located near the center of the disk could detect a small hole once per ...

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Floppy disk, Floppy disk - Background, Floppy disk - History, Floppy disk - Origins the 8-inch disk, Floppy disk - The 5¼-inch minifloppy, Floppy disk - New formats no standard, Floppy disk - The 3½-inch microfloppy diskette, Floppy disk - Floppy killers, Floppy disk - Structure, Floppy disk - Current situation, Floppy disk - Compatibility, Floppy disk - More on floppy disk formats, Floppy disk - Using the disk space efficiently, Floppy disk - The Commodore 64/128, Floppy disk - The Commodore Amiga, Floppy disk - The Acorn Archimedes, Floppy disk - 12-inch floppy disks, Floppy disk - 4-inch floppies, Floppy disk - Auto-loaders, Floppy disk - Floppy mass storage, Floppy disk - 2-inch floppy disks, Floppy disk - Ultimate capacity speed, Floppy disk - Usability, Floppy disk - The floppy as a metaphor, Floppy disk - Floppy trivia

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