List of defunct hard disk manufacturers explained
At least 218 companies have manufactured hard disk drives (HDDs) since 1956. Most of that industry has vanished through bankruptcy or mergers and acquisitions. None of the first several entrants (including IBM, who invented the HDD) continue in the industry today. Only three manufacturers have survived—Seagate, Toshiba and Western Digital (WD)—all of which grew at least in part through mergers and acquisitions.[1]
Manufacturers
The following is a partial list of defunct hard disk manufacturers. There are currently manufacturers in this incomplete list.
Name | Country of origin | Year of market entry | Year of market exit | Fate | Notes | References |
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| United States | 1981 | 1983 | | < | --Notes--> | [2] |
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| Japan | | 2008 | | < | --Notes--> | [3] |
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| United States | 1983 | 1986 | | < | --Notes--> | [4] [5] |
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| United States | 1970 | | | < | --Notes--> | [6] |
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| United States | 1964 | 1967 | | < | --Notes--> | [7] [8] |
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| United States | 1987 | 1999 | Acquired by Tomen Electronics and Sanyo in 1993, dissolved in 1998 | | [9] |
| United States | 1982 | 1987 | | < | --Notes--> | [10] [11] |
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| United States | 1992 | | | < | --Notes--> | [12] |
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| United States | 1991 | 1998 | Bankruptcy | < | --Notes--> | [13] [14] [15] |
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| Germany | 1970 | 1982 | | < | --Notes--> | [16] [17] |
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| United States | 1986 | | | < | --Notes--> | [18] |
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| United States | 1959 | 1972 | Dissolution | Renamed to XLO Computer Products in 1972 | [19] |
| United States | 1984 | 1989 | | | [20] |
| United States | 1964 | | | < | --Notes--> | [21] |
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| Japan | 1985 | | | < | --Notes--> | [22] |
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| United States | 1999 | 2004 | Bankruptcy | < | --Notes--> | |
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| United States | 1967 | 1969 | | < | --Notes--> | [23] [24] [25] |
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| United States | 1972 | 1979 | | < | --Notes--> | [26] |
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| Scotland | 1992 | 2001 | Dissolution | < | --Notes--> | [27] [28] |
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| United States | 1987 | | | < | --Notes--> | [29] |
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| United States | 1968 | 1972 | Acquired by CalComp in 1972; later sold to Xerox in 1979 | < | --Notes--> | |
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| France | 1975 | 1989 | | | [30] |
| United States | 1983 | 1985 | Dissolution | < | --Notes--> | [31] [32] |
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| United States | 1988 | 1991 | Dissolution | < | --Notes--> | [33] [34] |
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| United States | 1979 | 1986 | Exited the HDD business | < | --Notes--> | |
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| United States | 1969 | 1971 | Dissolution | < | --Notes--> | [35] [36] [37] |
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| United States | 1985 | 1996 | | < | --Notes--> | |
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| United States | 2000 | 2007 | Dissolution | < | --Notes--> | [38] [39] |
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| United States | 1962 | 1977 | | < | --Notes--> | [40] [41] |
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| United States | 1969 | | | < | --Notes--> | |
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| United States | 1977 | 1984 | | < | --Notes--> | [42] |
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| United States | 1962 | | Exited the HDD business | < | --Notes--> | |
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| United Kingdom | 1970 | 1988 | | First company to manufacture HDDs in Europe | [43] [44] [45] |
| United States | 1986 | 1989 | Dissolution | < | --Notes--> | [46] [47] |
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| United States | 1969 | 1972 | | < | --Notes--> | [48] |
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| United States | 1969 | 1993 | Exited the HDD business | < | --Notes--> | [49] |
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| United States | 1983 | 1984 | | < | --Notes--> | [50] [51] |
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| United States | 1982 | 1983 | Dissolution | | [52] [53] |
| United States | 1981 | 1985 | Dissolution | < | --Notes--> | [54] |
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| Bulgaria | 1968 | 1999 | Dissolution | Originally a state-owned entity, later converted to private company; HDD assets dispersed between 1997 and 1999 | [55] |
| United States | 1990 | 1993 | Dissolution | Never produced any drives beyond prototypes | [56] |
| United States | 1969 | 1985 | | < | --Notes--> | [57] |
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| United States | 1979 | 1992 | | < | --Notes--> | |
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| Japan | 1985 | 1987 | Left the HDD business | < | --Notes--> | [58] [59] |
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| South Korea | 1990 | | Dissolution | < | --Notes--> | [60] |
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| China | 2000 | 2008 | Dissolution | < | --Notes--> | |
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| Japan | 1985 | 2011 | Exited the HDD business | < | --Notes--> | [61] [62] |
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| Japan | 1963 | 2009 | | < | --Notes--> | [63] [64] |
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| United States | 1962 | 1970 | | < | --Notes--> | [65] [66] |
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| China | 2003 | | Dissolution | < | --Notes--> | [67] |
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| United States | 1979 | 1996 | Exited the HDD business | | [68] [69] |
| United States | 2003 | 2018 | | Hitachi's HDD business after acquiring IBM's HDD assets | |
| United States | 1967 | 2018 | | < | --Notes--> | |
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| Japan | 1980 | | | < | --Notes--> | [70] |
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| South Korea | | | | < | --Notes--> | |
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| United States | 1956 | 2003 | | Inventors of the HDD
- HDD assets briefly spun off to AdStar between 1992 and 1995
| |
| United States | 1975 | 1989 | | Joint venture between Control Data and CII-Honeywell-Bull; Internally known as Magnetic Peripherals, Inc | |
| United States | 1969 | 1973 | | < | --Notes--> | [71] [72] [73] |
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| United States | 1990 | 1998 | | | [74] [75] |
| United States | 1977 | 1984 | Merged with Onyx Systems to become Dorado Micro Systems, later Onyx-IMI; left the HDD business in 1984; HDD business sold to Fujhin Electronic Computer Co. in 1985 | < | --Notes--> | [76] [77] [78] [79] [80] |
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| United States | 1969 | 1975 | | < | --Notes--> | [81] [82] |
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| United States | 1995 | 2008 | | < | --Notes--> | |
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| Bulgaria | 1962 | 1991 | Dissolution | State-owned entity | |
| United States | 1984 | 1986 | Dissolution | < | --Notes--> | [83] [84] [85] |
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| United States | 1994 | 1999 | Dissolution | < | --Notes--> | |
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| Japan | 1986 | | | < | --Notes--> | [86] |
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| United States | 1987 | 1994 | | < | --Notes--> | [87] [88] |
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| United States | 1977 | 1988 | Dissolution | < | --Notes--> | [89] [90] |
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| Japan | 1984 | 1991 | Exited the HDD business | < | --Notes--> | [91] [92] |
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| United States | 1984 | 1987 | Bankruptcy | < | --Notes--> | [93] [94] [95] |
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| United States | 1961 | 1968 | | < | --Notes--> | [96] |
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| United States | 1968 | 1969 | Dissolution | < | --Notes--> | [97] [98] |
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| Japan | 1989 | 2000 ca. | Exited the HDD business | Originally as a licensee of Quantum | [99] |
| United States | 1982 | 2006 | | < | --Notes--> | |
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| United States | 1968 | 1981 | | Manufactured the first HDD subsystems that were plug-compatible with IBM's | |
| United States | 1983 | 1986 | Bankruptcy | < | --Notes--> | [100] [101] |
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| United States | 1986 | 1996 | | < | --Notes--> | |
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| United States | 1982 | 1993 | Bankruptcy | < | --Notes--> | [102] [103] |
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| United States | 1980 | 1990 | | < | --Notes--> | |
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| United States | 1991 | 1995 | Bankruptcy | Manufactured the first PC Card HDDs | [104] [105] |
| Japan | 1968 | 2002 | | < | --Notes--> | [106] |
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| Japan | | | | < | --Notes--> | |
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| United States | 1964 | | | < | --Notes--> | [107] |
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| Japan | 1965 | 2002 | Exited the HDD business | < | --Notes--> | [108] |
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| United Kingdom | 1984 | 1988 | | < | --Notes--> | [109] [110] |
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| Japan | 1983 | | | < | --Notes--> | [111] |
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| Japan | 1971 | 1986 | Dissolution | < | --Notes--> | [112] [113] [114] |
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| France | 1992 | 1998 | | < | --Notes--> | |
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| United States | 1980 | 1980 | | < | --Notes--> | [115] |
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| Japan | 1973 | 1980 | | < | --Notes--> | [116] [117] [118] |
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| Italy | 1981 | | Left the HDD business | < | --Notes--> | [119] [120] |
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| United States | 1990 | 1992 | Bankruptcy; HDD assets sold to Samsung Electronics in 1995 | < | --Notes--> | [121] [122] |
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| Japan | 1985 | | Exited the HDD business | < | --Notes--> | [123] |
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| United States | 1971 | 1987 | | < | --Notes--> | [124] [125] |
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| Netherlands | | | | < | --Notes--> | |
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| United States | 1983 | 1993 | Dissolution | | |
| United States | 1968 | 1975 | Bankruptcy | < | --Notes--> | [126] [127] [128] |
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| United States | 1985 | 1991 | Bankruptcy | | |
| United States | 1978 | 1991 | | < | --Notes--> | |
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| United States | 1985 | 1990 | Dissolution | < | --Notes--> | [129] [130] |
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| United States | 1980 | 2000 | | < | --Notes--> | |
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| Japan | 1985 | | Exited the HDD business | < | --Notes--> | [131] |
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| Scotland | 1979 | 1991 | Exited the HDD business | | |
| United States | 1981 | 1982 | | < | --Notes--> | [132] [133] |
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| France | | | Exited the HDD business | < | --Notes--> | |
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| South Korea | 1988 | 2011 | | < | --Notes--> | [134] [135] |
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| United States | 1989 | 1991 | Bankruptcy | | [136] [137] |
| United States | 1979 | 1985 | Acquired by Xerox in 1977; assets liquidated in 1985 | < | --Notes--> | |
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| Germany | | | | < | --Notes--> | |
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| United States | 1969 | 2005 | | < | --Notes--> | |
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| United States | 1982 | 1999 | | < | --Notes--> | |
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| United States | 1981 | 1988 | | < | --Notes--> | [138] [139] |
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| Japan | | | | < | --Notes--> | |
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| United States | 1981 | | Exited the HDD business | | [140] [141] [142] |
| Japan | | | | < | --Notes--> | |
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| United States | 1982 | 1991 | Dissolution | < | --Notes--> | [143] [144] |
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| United States | 1982 | 1985 | | < | --Notes--> | [145] [146] |
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| United States | 1974 | | | Originally named Microcomputer Systems Corporation; 1410 SCSI controller formed the basis of IBM PC's hard disk controller | [147] [148] |
| Japan | | 1995 | Exited the HDD business | < | --Notes--> | [149] | |
---|
See also
References
- General references
- Specific references
Further reading
- Web site: Poh-Kam . Wong . The Dynamics of the HDD Industry Development in Singapore . The Information Storage Industry Center, Graduate School of International Relations and Pacific Studies, University of California . Centre for Management of Innovation and Technopreneurship, National University of Singapore . July 1999 . Report 99–03 . March 27, 2017 . dead . https://web.archive.org/web/20120717032347/http://isic.ucsd.edu/papers/pohkam.pdf . July 17, 2012 .
Notes and References
- Web site: History: List of 221 Companies in HDD Manufacturing Since 1956 . Jean-Jacques . Maleval . March 28, 2013 . Computer Data Storage Newsletter . Micro-Journal . https://web.archive.org/web/20130331010059/https://www.storagenewsletter.com/news/disk/217-companies-hdd-since-1956 . March 31, 2013.
- Gross . Steve . August 10, 1983 . 3M says it plans to give up making disk-drive units . Star Tribune . 7B . Newspapers.com.
- Web site: March 19, 2007 . Alps to sell hard-disk head assets to rival TDK . Electronic Engineering Times . UBM LLC . https://archive.today/20240110031327/https://www.eetimes.com/alps-to-sell-hard-disk-head-assets-to-rival-tdk/ . January 10, 2024.
- Danish . Paul . July 19, 1983 . Amcodyne pioneers removable hard disk . Journal of Commerce and Commercial . UBM Global Trade . 357 . 6A . Gale.
- September 16, 1986 . Century Data to Acquire Colorado Disk Drive Firm . Los Angeles Times . 8 . https://archive.today/20240110031821/https://www.latimes.com/archives/la-xpm-1986-09-16-fi-10803-story.html . January 10, 2024.
- Piasta . Frank . October 28, 1970 . First Ampex Disk Drive System Is 2314-Compatible . Computerworld . CW Communications . IV . 43 . 21 . the Internet Archive.
- June 1964 . Memory Systems . Computers and Automation . Berkeley Enterprises . XIII . 6 . 42 . the Internet Archive.
- October 18, 1967 . Stockholder Blessing on Anelex-Mohawk Data . The Boston Globe . 73 . Newspapers.com.
- Kovsky . Steven . May 30, 1988 . Executive exodus troubles Maxtor . Computer Systems News . UBM LLC . 368 . 1 et seq . Gale.
- Pate . Donald . October 1982 . Atasi: Why Another Disk Drive Company? . Digital Design . Morgan-Grampian Publishing . 12 . 10 . 91 . the Internet Archive.
- Martin . James A. . April 20, 1987 . Tandon buys Winchester drive maker . Computerworld . IDG Publications . XXI . 16 . 105 . Google Books.
- Weisman . Jonathan . February 17, 1992 . Tiny disk drive may bring big payoff to Aura . The Business Journal . American City Business Journals . 9 . 44 . 1 et seq . Gale.
- Nash . Jim . March 28, 1994 . Avatar on crusade to revolutionize hard-disk drives . The Business Journal . American City Business Journals . 11 . 50 . 1 et seq . Gale.
- Book: 1998 . Peterson's Hidden Job Market: 2,000 High-growth Companies That Are Hiring at Four Times the National Average . Peterson's Guides . 34 . 9781560798347 . the Internet Archive . 1998.
- Furger . Roberta . October 1998 . Rebate or Rip-Off? . PC World . IDG Publications . 16 . 10 . 183 . Gale.
- January 23, 1970 . Raytheon nets $2.35 a share . The Boston Globe . 26 . Newspapers.com.
- May 31, 1982 . Supershorts . Computerworld . CW Communications . XVI . 22 . 60 . Google Books.
- Pitta . Julie . August 11, 1986 . CMI co-founder establishes Winchester drive start-up . Computer Systems News . UBM LLC . 276 . 22 . Gale.
- August 1972 . XLO: What It Could Have Been . Datamation . Technical Publishing Company . 18 . 8 . 87 . the Internet Archive.
- April 9, 1984 . The Bull Group to establish Bull Peripheral in Calif. . Computerworld . CW Communications . XVIII . 15 . 144 . Google Books.
- Merger fallout puts Memorex across Atlantic . Alan . Alper . XX . 45 . Computerworld . November 10, 1986 . 1, 8 .
- Book: March 30, 1985 . C. Itoh Full Line of Small Winchester Disk Drives: NP04/03/02 Family . C. Itoh & Co., Ltd. . Bitsavers.
- September 20, 1967 . January Deliveries From Caelus: Another Independent Disk-Pack Supplier . Computerworld . CW Communications . 1 . 6 . 1, 4 . the Internet Archive.
- Molly . Upton . Caelus Plans 3336-11-Type Disk, Will 'Wait and See' on Winchester . Computerworld . VII . 44 . October 31, 1973 . 34 .
- Web site: n.d. . Electronic Memories and Magnetics Corporation . Collection of Historical Scientific Instruments . Harvard University.
- March 26, 1979 . Calcomp–Xerox Deal Completed . Computerworld . Computerworld . XIII . 13 . 84 . Google Books.
- December 19, 1992 . Former Rodime team forms Calluna to make 80Mb 1.8[-inch] disk drives ]. . GlobalData . Gale.
- August 31, 2001 . Calluna's disk business finally grinds to a halt . The Herald . Newsquest Media Group . 24 . Gale.
- Kimbrough . Jan . September 28, 1987 . Cardiff Peripheral Corp touts 3.5-inch drive . Computer Systems News . UBM LLC . 333 . 24 . Gale.
- August 20, 1975 . MPI Begins Operations . Computerworld . CW Communications . IX . 34 . 33 . Google Books.
- February 28, 1983 . Company Formed to Market 5.25-Inch Winchesters . Computer Systems News . UBM LLC . 114 . 68 . Gale.
- Moad . J. . May 27, 1985 . Cogito Shelves 20M-Byte Drive, Cuts Staff . Electronic News . Sage Publications . 31 . 1551 . 26 . Gale.
- Hayashi . Alden M. . November 15, 1988 . Hard times for hard drives . Electronic Business . Reed Business Information . 14 . 22 . 32 et seq . Gale.
- Web site: n.d. . Comport Corporation . OpenCorporates . https://archive.today/20240110035213/https://opencorporates.com/companies/us_ca/1527584 . January 10, 2024.
- November 23, 1969 . James Flynn Joins Computer Memory Devices . Arizona Republic . 20D . Newspapers.com.
- August 23, 1970 . Firm expands computer line . Arizona Republic . 16-B . Newspapers.com.
- Web site: n.d. . Computer Memory Devices, Inc. . OpenCorporates . https://archive.today/20240110035445/https://opencorporates.com/companies/us_ca/0594985 . January 10, 2024.
- Web site: Frauenheim . Ed . June 30, 2004 . Minidrive maker Cornice slapped with another suit . CNET . CBS Interactive . https://web.archive.org/web/20220815112700/https://www.cnet.com/culture/minidrive-maker-cornice-slapped-with-another-suit/ . August 15, 2022.
- February 26, 2007 . Flash Prices Kill Cornice's Disk-Drive Plans . ExtremeTech.com . Ziff-Davis . Gale.
- April 21, 1969 . Data Disc Inc. names Stevens new president . The Peninsula Times Tribune . 11 . Newspapers.com.
- March 7, 1977 . Acquisitions . Computerworld . CW Communications . XI . 10 . 48 . Google Books.
- April 4, 1984 . Xebec Completes Acquisition . The Wall Street Journal . Dow Jones & Company . 1 . ProQuest.
- April 29, 1970 . Contracts . Computerworld . CW Communications . IV . 17 . 95D . the Internet Archive.
- August 19, 1988 . Advertisement . DGI Group – An FKI Babcock Company . Camberley News . 68 . Newspapers.com.
- Book: Mowery, David C. . 1999 . U.S. Industry in 2000: Studies in Competitive Performance . National Academies Press . 9780309173575 . Google Books.
- Web site: n.d. . Data-Tech Memories, Inc. . OpenCorporates . https://archive.today/20240110044304/https://opencorporates.com/companies/us_ca/1549232 . January 10, 2024.
- Book: Bodo, Martin . Harold Moorehead . 1996 . Hard Drive Bible . Corporate Systems Center . 9780964150317 . Google Books.
- Web site: Oral History of George Comstock . Mountain View, California, USA . George E. . Comstock . Gardner . Hendrie . August 13, 2003 . CHM X2727.2004 . Computer History Museum . March 23, 2017 . live . https://web.archive.org/web/20170323110042/http://archive.computerhistory.org/resources/text/Oral_History/Comstock_George/Comstock_George_1.oral_history.102658008.pdf . March 23, 2017.
- Doyle . Eric . July 1993 . Driving range . DEC User . EMAP Media . 19 . Gale.
- December 12, 1983 . Mergers & Acquisitions . Computerworld . CW Communications . XVII . 50 . 121 . Google Books.
- Love . N. . September 24, 1984 . Disc Tech One Inc. Is Acquired by Hearing Aid Manufacturer . Computer Systems News . UBM LLC . 75 . Gale.
- September 27, 1982 . Supershots . Computerworld . CW Communications . XVI . 39 . 115 . Google Books.
- Perkowski . M. . December 12, 1983 . Disctron Exits 5.25[-inch] Winchester Disk Drive Fray ]. Computer Systems News . UBM LLC . 143 . 1 . Gale.
- Pitta . J. . August 12, 1985 . Shakeout Continues in Disk Market: DMA Systems Closes Doors after Failing to Land Funds . Computer Systems News . UBM LLC . 224 . 1 . Gale.
- Web site: n.d. . DZU AD (Bulgaria) . EMIS . ISI Emerging Markets Group . https://archive.today/20240110042528/https://www.emis.com/php/company-profile/BG/Dzu_AD__%D0%94%D0%B7%D1%83_%D0%90%D0%94__en_1403688.html . January 10, 2024.
- Web site: Maleval . Jean Jacques . June 1993 . Ecol. 2 Out of Business . Computer Data Storage Newsletter . Micro-Journal . https://web.archive.org/web/20240110043230/https://www.storagenewsletter.com/2020/10/01/history-1993-ecol-2-out-of-business/ . January 10, 2024.
- December 12, 1977 . EMM to Acquire Group/3 from Informatics . Computerworld . CW Communications . XI . 50 . 68 . Google Books.
- 1985 . [Unknown title] ]. Mini-Micro Systems . Cahners Publishing . 18 . 34 . Google Books.
- Book: September 1987 . Epson Equity II+ Personal Computer Service Manual . Epson America . 370.
- 1990 . EsPerT Emerges Over the Horizon . Korea Trade & Business . KOTRA . 8 . 24 . Google Books.
- Laughton . S. . September 3, 1985 . Western Digital Puts 20M-byte Disk on Board . PC Week . Ziff-Davis . 2 . 35 . 4 . Gale.
- Web site: April 27, 2011 . Notice Regarding Structural Reform of the Hard-Disk Business . Fuji Electric . https://web.archive.org/web/20240104143910/https://www.fujielectric.com/about/news/detail/11042701.html . January 4, 2024.
- Web site: n.d. . Peripheral Equipment: Magnetic Disk Units . Historical Computers in Japan . IPSJ Computer Museum . https://web.archive.org/web/20230403063304/https://museum.ipsj.or.jp/en/computer/device/magnetic_disk/index.html . April 3, 2023.
- Web site: Mearian . Lucas . February 17, 2009 . Why Toshiba is buying Fujitsu's HDD business . Computerworld . IDG Communications . https://web.archive.org/web/20240110043912/https://www.computerworld.com/article/2531200/why-toshiba-is-buying-fujitsu-s-hdd-business.html . January 10, 2024.
- November 2, 1962 . GE Plant Is Installing High Speed Computer . The News-Virginian . 3 .
- Lee . J. A. N. . 1995 . The Rise and Fall of the General Electric Corporation Computer Department . IEEE Annals of the History of Computing . Institute of Electrical and Electronics Engineers . 17 . 4 . 24–45 . 10.1109/85.477434 .
- July 24, 2003 . Magicstor to Launch Large Scale Manufacture of 1 Inch Hard Disk . Asia Africa Intelligence Wire . Financial Times Limited . Gale.
- Web site: n.d. . HP 7910 Disc Drive . IT History Society . https://web.archive.org/web/20240110044617/https://www.ithistory.org/db/hardware/hewlett-packard-hp/hp-7910-disc-drive . January 10, 2024.
- Web site: July 10, 1996 . HP shuts down disk drive division . CNET . CBS Interactive . https://web.archive.org/web/20220818085600/https://www.cnet.com/tech/tech-industry/hp-shuts-down-disk-drive-division/ . August 18, 2022.
- Book: ((McGinlay et al.)) . January 20, 1987 . U.S. Patent 4,638,383 . United States Patent and Trademark Office . the Internet Archive . 21 . Hokushin Electric Works, Ltd., 'CD 8000 Expand Your System Versatility with Low Cost 8 inch Winchester', 1980..
- February 18, 1969 . Data storage firm occupies new building . The Peninsula Times Tribune . 7 . Newspapers.com.
- June 25, 1971 . Acquisition enables Itel to enter new market . The Peninsula Times Tribune . 7 . Newspapers.com.
- July 6, 1973 . Sperry Rand acquires ISS . The Peninsula Times Tribune . 9 . Newspapers.com.
- Day . Janet . November 6, 1990 . 3 From PrairieTek Found New Computer Firm . Denver Post . C1 . ProQuest.
- Potter . Beth . June 1, 1998 . Integral sold to investor group . Boulder County Business Report . Boulder Business Information . 17 . 6 . 1 . ProQuest.
- July 26, 1978 . Around Minnesota . The Minneapolis Star . 10B . Gale.
- Book: 1984 . Background . Corvus Systems . 5 . the Internet Archive.
- September 6, 1984 . Tech firm may close Oregon plant . Albany Democrat-Herald . 6 . Newspapers.com.
- February 23, 1985 . Oregon firm gets job . The Sacramento Bee . B5 . Newspapers.com.
- Book: 1982 . Moody's OTC Industrial News Reports . Dorado Micro Systems . Moody's Investors Service . 2843 . Google Books.
- November 12, 1969 . Mini-Frisbees . Computerworld . CW Communications . 3 . 45 . 46 . the Internet Archive.
- August 19, 1976 . Data Corp. leaving Santa Clara . The San Francisco Examiner . 58 . Newspapers.com.
- Brisson . M. . December 3, 1984 . Josephine's Conservative Approach Is Radical Among Start-Ups . Computer Systems News . UBM LLC . 30 . Gale.
- 1987 . Josephine County Technology, Inc. . PC Tech Journal . Ziff-Davis . 4 . 13 . 121 . the Internet Archive.
- Web site: n.d. . Josephine County Technology, Inc. . OpenCorporates . https://archive.today/20240110050809/https://opencorporates.com/companies/us_or/16928715 . January 10, 2024.
- November 10, 1986 . JVC Releases Hard Drive for Portables and Laptops . InfoWorld . IDG Publications . 8 . 45 . 20 . Google Books.
- Martin . James A. . December 7, 1987 . Kalok KOs Winchester cost, shoots market prices down . Computerworld . CW Communications . 21 . 49 . 33 et seq . Gale.
- Hostetler . Michele . April 3, 1995 . Jugi Tandon starts disk drive firm with Kalok technology . The Business Journal . American City Business Journals . 12 . 54 . 7 . Gale.
- April 17, 1978 . Expansions . Computerworld . CW Communications . XII . 16 . 80 . the Internet Archive.
- Lucas . Peter . January 18, 1988 . Irwin Magnetics buys into new markets for tape backup . Computer Reseller News . UBM LLC . 242 . 106 et seq . Gale.
- Kontzer . Tony . September 19, 1994 . Shareholders left out of arbitration award . The Business Journal . American City Business Journals . 12 . 24 . 1 et seq . Gale.
- Addo . Pamela . August 22, 1991 . Kyocera drops low-end, goes optical . Computer Dealer News . CEDROM-SNi . 7 . 17 . 1 et seq . Gale.
- Szuprowicz . Bohdan . June 19, 1984 . Microwinnies new disk storage stars . Citizen Register . 2D . Newspapers.com.
- Greenberg . Adam . November 2, 1987 . Kyocera takes over LaPine Drive mktg . Electronic News . Sage Publications . 33 . 1679 . 15 et seq . Gale.
- September 10, 1994 . Prudential awarded judgement . South Florida Sun Sentinel . 7B . Newspapers.com.
- Siddon . Dave . June 7, 1961 . Powerful New Computer . Valley Times . 19 . Newspapers.com.
- Sterling . Charles . May 26, 1968 . Business Scene . Independent Star-News . C-12 . Newspapers.com.
- February 28, 1969 . Marshall Unit Sold . Los Angeles Times . 56 . Newspapers.com.
- 1989 Disk/Trend Report - Rigid Disk Drives . Porter . James . MFGR-16 .
- Moran . S. . April 15, 1984 . Public Spotlight: Microproduct Memories Inc . Electronic Business . Reed Business Information . 10 . 5 . 130 . Gale.
- Patterson . William Pat . September 15, 1986 . The seductive, risky world of computer peripherals . Industry Week . Endeavor Business Media . 230 . 48 et seq . Gale.
- Book: Noble, Gregory W. . March 2000 . Conspicuous Failures and Hidden Strengths of the ITRI Model: Taiwan's Technology Policy Toward Hard Disk Drives and CD-ROMs . Australian National University . Gale . 14.
- Aragon . Lawrence . January 11, 1993 . Microscience quits, lists 81 creditors . The Business Journal . American City Business Journals . 10 . 39 . 1 et seq . Gale.
- Aragon . Lawrence . Bill Snyder . November 29, 1993 . The New Guard . PC Week . Ziff-Davis . 10 . 47 . A1 et seq . Gale.
- April 10, 1995 . MiniStor prepares for Chapter 11 . Electronic News . Sage Publications . 41 . 2060 . 50 . Gale.
- Maleval . Jean Jacques . August 28, 2023 . Showa Denko to Buy Disk Media Business of Competitor MCC . Computer Data Storage Newsletter . Micro-Journal . 178 . https://web.archive.org/web/20240110052311/https://www.storagenewsletter.com/2023/08/28/history-2002-showa-denko-to-buy-disk-media-business-of-competitor-mcc/ . January 10, 2024.
- June 2, 1964 . NCR Business System Compact Hits Market . Dayton Daily News . 13 . Newspapers.com.
- January 2002 . NEC to end hard disk drive production . Australian PC World . IDG Communications . 18 . Gale.
- January 1984 . Peripherals: Access Times of 30 Milliseconds . What's New in Computing . UBM Information . 52 . Gale.
- December 15, 1988 . Disk drive trade axed . Horncastle Target . 6 . Newspapers.com.
- 1987 . Nippon Electric Industry Co., Ltd. . PC Tech Journal . Ziff-Davis . 4 . 13 . 123 . the Internet Archive.
- August 14, 1973 . Japan Firms to Link Up . The Tennessean . 21 . Newspapers.com.
- May 14, 1975 . Japan Vendor Flying in Drives . Computerworld . CW Communications . 9 . 20 . 49 . the Internet Archive.
- Feil . Stuart . August 4, 1986 . Hitachi, Fujitsu set to disband drive venture . Electronic News . Sage Publications . 32 . 1 et seq . Gale.
- Ohio Scientific, M-A/COM Sign. Staff writer. Computerworld. CW Communications. December 8, 1980. 14. 50. 64. the Internet Archive.
- July 25, 1973 . Okidata Acquires Bridge . Computerworld . CW Communications . VII . 30 . 34 . Google Books.
- July 16, 1975 . Okidata M300 Stores 9M Bits . Computerworld . CW Communications . IX . 29 . 23 . Google Books.
- Staff writer . December 15, 1980 . Okidata Winchester Line Sold to Ohio Scientific Memory . Computerworld . CW Communications . 14 . 51 . 62 . Google Books.
- December 8, 1980 . Olivetti Forms Subsidiary . Computerworld . CW Communications . 14 . 50 . 58 . the Internet Archive.
- May 26, 1982 . Olivetti Distributor . The Daily Times . D1 . Newspapers.com.
- Lyons . Daniel J. . July 23, 1990 . Newcomer buys out defunct drive maker, plans market assault . PC Week . Ziff-Davis . 7 . 29 . 140 . Gale.
- Hostetler . Michele . May 8, 1995 . Failed drive firm sat on a gold mine . The Business Journal . American City Business Journals . 13 . 3 . 1 et seq . Gale.
- One Computer Corporation . November 12, 1985 . Otari C-256 20 MByte Hard Disk Drive . PC Magazine . Ziff-Davis . 4 . 23 . Advertisement . 282 . Google Books.
- May 13, 1971 . Low-cost disc drives access in 60 ms . Electronic Design . Hayden Publishing . 19 . 10 . 114 . the Internet Archive.
- Another OEM doesn't go to the devil . Computerworld . Advertisement . October 31, 1973 . 32 . VII . 44.
- August 1968 . Potter DD4311 Disk Drive Is IBM Compatible . Computers and Automation . Berkeley Enterprises . 17 . 8 . 61 . the Internet Archive.
- Piasta . Frank . February 25, 1970 . All IBM Tapes, Disks Have Plug-to-Plug Counterparts . Computerworld . CW Communications . 4 . 8 . S29 . the Internet Archive.
- January 28, 1987 . John Taft Potter, 75, Inventor, Founded Computer Firm . Newsday . 43 . Newspapers.com.
- Ryan . Melinda . September 28, 1986 . Peripheral Technology Inc. relocates facility . Simi Valley Star . 23 . Newspapers.com.
- Web site: n.d. . Peripheral Technology Inc. . OpenCorporates . https://archive.today/20240110054651/https://opencorporates.com/companies/us_ca/1353713 . January 10, 2024.
- Takahashi . Ken . August 8, 1990 . Ricoh to boost output of removable HDD . Newsbytes . The Washington Post Company . Gale.
- March 2, 1981 . New Companies . Computerworld . CW Communications . XV . 9 . 68 . the Internet Archive.
- August 11, 1982 . CCT Completes Merger . Goleta Sun . 12 . Newspapers.com.
- Lasnier . Guy . June 20, 1988 . New Milpitas company jumps into disk drive market . The Business Journal . American City Business Journals . 6 . 9 . SR9 . Gale.
- Web site: Ribeiro . John . December 20, 2011 . Seagate completes acquisition of Samsung's HDD business . Computerworld . IDG Communications . https://web.archive.org/web/20240110055046/https://www.computerworld.com/article/2733273/seagate-completes-acquisition-of-samsung-s-hdd-business.html . January 10, 2024.
- December 8, 1989 . Sequel born in management buyout of Unisys disk unit . Computergram International . GlobalData . 1323 . Gale.
- ((Ross-Dove Company, Inc.)) . November 10, 1991 . Public Auction Calendar . The San Francisco Examiner . 28 . Newspapers.com.
- Markoff . John . November 9, 1981 . Tandy orders $25 million worth of disk drives . InfoWorld . IDG Publications . 3 . 25 . 7 . Google Books.
- O'Dell . John . May 24, 1988 . Western Digital Bought Patent Problems When It Acquired Hard Disk Operation . Los Angeles Times . 14 . https://web.archive.org/web/20210224112025/https://www.latimes.com/archives/la-xpm-1988-05-24-fi-3039-story.html . February 24, 2021.
- Hogan . Thom . May 25, 1981 . It's Enough to Disk-Drive You Crazy . InfoWorld . IDG Publications . 3 . 10 . 44–46 . Google Books.
- Free . John . October 1982 . The amazing Winchester . Popular Science . Times Mirror Magazines . 221 . 4 . 88–90 . Google Books.
- Sehr . Robert A. . February 1983 . Amlyn, DriveTec push minifloppy capacities to more than 3M bytes . Mini-Micro Systems . Cahners Publishing . XVI . 2 . 26, 32 . the Internet Archive.
- August 15, 1983 . Start-Up Funded by ITT Eyes Half-Height 5.25 Inch Winchester Fray . Computer Systems News . UBM LLC . 129 . 29 . Gale.
- Web site: n.d. . Tulin Corporation . OpenCorporates . https://archive.today/20240110060210/https://opencorporates.com/companies/us_ca/1175117 . January 10, 2024.
- April 22, 1985 . Merger spurs Priam layoff . Computerworld . IDG Publications . XIX . 16 . 95 . Google Books.
- July 17, 1982 . Melbourne's Florida Data names new president . Florida Today . 14C . Newspapers.com.
- Book: 1985 . Moody's Handbook of NASDAQ Stocks . Moody's Investor Service . Google Books.
- Kaufman . Steve . March 1, 1985 . Xebec Attempting to Chart a Course Back to Recovery . Morning Call . B10 . ProQuest.
- Book: Belderbos, René . 1997 . Japanese Electronics Multinationals and Strategic Trade Policies . Clarendon Press . 84–86 . 9780198233329 . Google Books.