EK-DOS

EK-DOS is a disk operating system created and marketed by EKS. It was discontinued in 1992.

History
EK-DOS was first released to the public in April 1976 by EKSoft. It was their first proper operating system and it was the renamed form of V-DOS, owned by VSTRO, written by Hayden Reyes and was initially released in March 1973 after one month of development. Eddie Asahi paid $12,000 (equivalent to $75,219 in 2018 dollars) to VSTRO for the base of V-DOS.

Versions
The following versions of EK-DOS were released to the public.
 * EK-DOS 1.x (1976)
 * EK-DOS 1.0 - Released on April 9, 1976
 * EK-DOS 1.01 - Released on June 20, 1976
 * EK-DOS 1.03 - Released on July 13, 1976
 * EK-DOS 1.04 - Released on August 2, 1976
 * EK-DOS 1.05 - Released on November 23, 1976
 * EK-DOS 1.1 - Released on January 6, 1977
 * EK-DOS 1.11 - Released on April 2, 1977
 * EK-DOS 2.x (1977)
 * EK-DOS 2.0 - Released on May 12, 1977
 * EK-DOS 2.02 - Released on October 23, 1977
 * EK-DOS 2.03 - Released on December 13, 1977
 * EK-DOS 2.05 - Released on July 4, 1978
 * EK-DOS 2.07 - Released on November 19, 1978
 * EK-DOS 2.10 - Released on January 17, 1979
 * EK-DOS 2.11 - Released on April 20, 1979
 * EK-DOS 3.x (1979)
 * EK-DOS 3.0 - Released on June 28. 1979
 * EK-DOS 3.02 - Released on October 24, 1979
 * EK-DOS 3.03 - Released on December 10, 1979
 * EK-DOS 3.05 - Released on March 30, 1980
 * EK-DOS 3.1 - Released on June 19, 1980
 * EK-DOS 3.11 - Released on November 7, 1980
 * EK-DOS 3.12 - Released on May 26, 1981
 * EK.DOS 4.x (1981)
 * EK-DOS 5.x (1983)
 * EK-DOS 6.x (1985)
 * EK-DOS 7.x (1987)