Disk density is a capacity designation on magnetic storage, usually floppy disks. Each designation describes a set of characteristics that can affect the...

floppy disk or floppy diskette (casually referred to as a floppy, a diskette, or a disk) is a type of disk storage composed of a thin and flexible disk of...

Floppy disk format and density refer to the physical and logical layout of data stored on a floppy disk. Since their introduction, there have been many...

A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using...

A floppy disk is a disk storage medium composed of a thin and flexible magnetic storage medium encased in a rectangular plastic carrier. It is read and...

stars in the galactic disk orbit at varying speeds, which depend on their distance to the galaxy center. The presence of spiral density waves in galaxies...

higher densities than hard disk drives, but hard disk drives have since advanced much more quickly and eclipsed optical media in both areal density and capacity...

participants collected disks from a board of increasing disk density. Thus, the resulting formulae are often referred to as Holling's Disk Equations. The type...

the drive's on-disk format using one of a number of encoding schemes, like FM encoding (single density) or MFM encoding (double density), and reading those...

magnetic disk storage devices from 1956 to 2003, when it sold its hard disk drive business to Hitachi. Both the hard disk drive (HDD) and floppy disk drive...

high density Macintosh format disks. dd (Unix) Disk image Disk storage Don't Copy That Floppy Floppy disk controller Floppy disk format Floppy disk hardware...

Higher performance in hard disk drives comes from devices which have better performance characteristics. These performance characteristics can be grouped...

The area density (also known as areal density, surface density, superficial density, areic density, column density, or density thickness) of a two-dimensional...

to enable higher areal density. The flying height of the head is controlled by the design of an air bearing etched onto the disk-facing surface of the...

able to format regular floppy disks to 32 MB capacity. However, this higher density comes at a price – the entire disk must be rewritten any time a change...

digital disk storage device was the IBM 350 which shipped in 1956 as a part of the IBM 305 RAMAC computing system. The random-access, low-density storage...

A hard disk drive platter or hard disk is the circular magnetic disk on which digital data is stored in a hard disk drive. The rigid nature of the platters...

0S. Version 2.0S was for single-density disks, 2.0D was for double-density disks. 2.0D shipped with the 815 Dual Disk Drive, which was both expensive...

cylinder 0 to 79 of a standard 3.5-inch (89 mm) double-density floppy disk, also called an 880 KiB disk in Amiga terms. The size of an ADF will vary depending...

Ae/Be star. The protoplanetary disk may not be considered an accretion disk; while the two are similar, an accretion disk is hotter and spins much faster;...

bit. For this reason, MFM disks are typically known as "double density", while the earlier FM became known as "single density". MFM is used with a data...

supplementary back-ups, and transferring of computer files. Compared with floppy disks or CDs, they are smaller, faster, have significantly more capacity, and...

In computer disk storage, a sector is a subdivision of a track on a magnetic disk or optical disc. For most disks, each sector stores a fixed amount of...

filesystems require a compatible disk controller (PROM update) and Apple DOS 3.3 or later. Apple II double-density 31⁄2-inch (90 mm) drives use variable...

increased storage density and decreased cost are traded for increased latency and decreased redundancy. JBOD (just a bunch of disks or just a bunch of...

In geometry, a disk (also spelled disc) is the region in a plane bounded by a circle. A disk is said to be closed if it contains the circle that constitutes...

The Disk II Floppy Disk Subsystem, often rendered as Disk ][, is a 5 +1⁄4-inch floppy disk drive designed by Steve Wozniak at the recommendation of Mike...

The IBM eXtended Density Format (XDF) is a way of superformatting standard high-density 3½-inch and 5¼-inch floppy disks to larger-than-standard capacities...

hard disks or microcomputer floppy disks until the late 1980s. GCR is a modified form of a NRZI code, but necessarily with a higher transition density. Group...

most other Commodore disk drives, these drives utilize zone bit recording to maintain an average bit density across the entire disk. Formatted capacity...