Copy already posted on Internet Archive
Many devices and programs from the early stages of development of the computer industry have sunk into oblivion, but sometimes you still manage to find something lost and very interesting. For example, Archive.org contributor f15sim discovered a very early version of 86-DOS. This is 86-DOS v0.11 from Seattle Computer Products. Interestingly, judging by the label on the floppy disk, this is the eleventh copy. It is unknown how many there were, but in any case this is one of the first.
This is the oldest version of 86-DOS, which itself is the ancestor of PC DOS and MS-DOS. Before this floppy disk was discovered, the oldest version was the much later v0.34.
What is important is that the author did not just publish the photo, but posted a copy on the Internet Archive. Enthusiasts have already tried the software. It turned out that the entire operating system was packed into just nine files. At the same time, the OS included even one game — chess. The floppy disk also contained programs for copying files and disks, a text editor, and two or three development utilities.