Build list legend
|Version of OS/2|
|Codename||CP/DOS, ADOS (Advanced DOS), DOS 5.0|
OS/2 1.0 is the first version of OS/2 to be released. It was originally meant to be DOS 5.0, and in fact, some early documentation refers to it as "DOS 5.0" rather than "OS/2". There is no GUI in this release.