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The megabyte is a multiple of the unit byte for digital information. ... The capacity of a disk drive is the product of the sector size, number of sectors per track ...
The storage limit of IDE standard for harddisks in 1986, also the volume size limit for the FAT16B file system (with 32 KiB clusters) released in 1987 as well as the maximum file size (2 GiB-1) in DOS operating systems prior to the introduction of large file support in DOS 7.10 (1997).
File size is a measure of how much data a computer file contains or how much storage space it is allocated. Typically, file size is expressed in units based on byte. A large value is often expressed with a metric prefix (as in megabyte and gigabyte) or a binary prefix (as in mebibyte and gibibyte). [1]
In 2000 the industry trade organization, International Disk Drive Equipment and Materials Association started work to define the implementation and standards that would govern sector size formats exceeding 512 bytes to accommodate future increases in data storage capacities. [11]
1982 – HP 7935 404 megabyte, 7-platter hard drive for minicomputers, HP-IB bus, $27,000; 1983 – RO351/RO352 first 3 1 ⁄ 2 inch drive released with capacity of 10 megabytes [38] 1986 – Standardization of SCSI; 1988 – PrairieTek 220 – 20 megabytes, two 2.5-inch disks, first 2.5-inch HDD [21]
32/64/128 GB: Three common sizes of USB flash drives; 1 TB: The size of a $30 hard disk (as of early 2024) 6 TB: The size of a $100 hard disk (as of early 2022) 16 TB: The size of a small/cheap $130 (as of early 2024) enterprise SAS hard disk drive; 24 TB: The size of $440 (as of early 2024) "video" hard disk drive
8-, 5.25-, 3.5-, 2.5-, 1.8- and 1-inch HDDs, together with a ruler to show the size of platters and read-write heads A newer 2.5-inch (63.5 mm) 6,495 MB HDD compared to an older 5.25-inch full-height 110 MB HDD. IBM's first hard disk drive, the IBM 350, used a stack of fifty 24-inch platters, stored 3.75 MB of data (approximately the size of ...
Some programs and operating systems, such as Microsoft Windows, still use "MB" and "GB" to denote binary prefixes even when displaying disk drive capacities and file sizes, as did Classic Mac OS. Thus, for example, the capacity of a "10 MB" (decimal "M") disk drive could be reported as " 9.56 MB ", and that of a "300 GB" drive as "279.4 GB".