DOS 0 may refer to versions of Seattle Computer Products' QDOS/86-DOS (the predecessor of MS-DOS and PC DOS): * QDOS 0.10, SCP (possibly shipped) version in July 1980 * QDOS 0.11, SCP shipped version in August 1980 * QDOS 0.2/86-DOS 0.2, SCP (possibly shipped) version in August 1980 * 86-DOS 0.3, SCP OEM released version in November 1980, licensed to OEMs including Microsoft * 86-DOS 0.33, SCP OEM released version in December 1980, licensed to OEMs including Microsoft * 86-DOS 0.34, SCP OEM released version in December 1980, licensed to OEMs including Microsoft * 86-DOS 0.42, SCP internal version in February 1981, first version supporting 32-byte directory entries * 86-DOS 0.56, SCP internal version in March 1981 * 86-DOS 0.60, SCP internal version in March 1981 * 86-DOS 0.74, SCP internal version in April 1981 * 86-DOS 0.75, SCP internal version in April 1981 * 86-DOS 0.76, SCP internal version in April 1981 * 86-DOS 0.80, SCP internal version in April 1981, renamed to 86-DOS 1.00 for stable release on 1981-04-28 It may also refer to versions of the FreeDOS operating system: * FreeDOS 0.05, a free and open-sourced DOS-compatible operating system distributed in January 1998 * FreeDOS 0.1, a successor version distributed in March 1998 * FreeDOS 0.2, a successor version distributed in October 1998 * FreeDOS 0.3, a successor version distributed in April 1999 * FreeDOS 0.4, a successor version distributed in April 2000 * FreeDOS 0.5, a successor version distributed in August 2000 * FreeDOS 0.6, a successor version distributed in March 2001 * FreeDOS 0.7, a successor version distributed in September 2001 * FreeDOS 0.8, a successor version distributed in April 2002 * FreeDOS 0.9rc1, a successor version distributed in July 2003 * FreeDOS 0.9rc2, a successor version distributed in August 2003 * FreeDOS 0.9rc3, a successor version distributed in September 2003 * FreeDOS 0.9rc4, a successor version distributed in February 2004 * FreeDOS 0.9rc5, a successor version distributed in March 2004 * FreeDOS 0.9, a successor version distributed in September 2004 * FreeDOS 0.9sr1, a successor version distributed in November 2004 * FreeDOS 0.9sr2, a successor version distributed in November 2005, predecessor of FreeDOS 1.0 See also * * * * * * * * * * *DOS 30 *
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