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Hard disk with platter Inside view of a hard disk Hard disk drive platter, 2.5" Samsung MP0402H. A hard disk drive platter or hard disk is the circular magnetic disk on which digital data is stored in a hard disk drive. [1] The rigid nature of the platters is what gives them their name (as opposed to the flexible materials which are used to ...
Cylinder-head-sector (CHS) is an early method for giving addresses to each physical block of data on a hard disk drive. It is a 3D-coordinate system made out of a vertical coordinate head, a horizontal (or radial) coordinate cylinder, and an angular coordinate sector. Head selects a circular surface: a platter in the disk (and one of its two ...
A track is a physical division of data in a disk drive, as used in the Cylinder-Head-Record (CCHHR) addressing mode of a CKD disk. The concept is concentric, through the physical platters, being a data circle per each cylinder of the whole disk drive. In other words, the number of tracks on a single surface in the drive exactly equals the ...
IBM's first hard drive, the IBM 350, used a stack of fifty 24-inch platters and was of a size comparable to two large refrigerators. In 1962, IBM introduced its model 1311 disk, which used six 14-inch (nominal size) platters in a removable pack and was roughly the size of a washing machine. This became a standard platter size and drive form ...
A hard disk drive (HDD), hard disk, hard drive, or fixed disk [a] is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material.
Track0 is physically located on the outer edge of the disk platter. Track0 is also the name of a terminate-and-stay-resident MS-DOS program that allows users to revive floppy disks with defective first tracks by swapping it with another track under the hood. With DOS, the first track of a floppy disk is used to store system information.