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0 pointschasil2y ago0 comments

See my post to a peer; this comes from the DEC Mica project, the cancelation of which directly led to Windows NT.

Windows was designed in part as a UNIX kernel.

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Alright, let me be more clear: WSL1 is NOT the POSIX personality of Windows NT. The POSIX personality was very dumb and minimal. WSL1 is NOT that. It is a different thing. And the POSIX personality doesn't even exist anymore.

chasilOP2y ago

Look at the wiki for Mica. The goal was for a whole implementation of Ultrix alongside of VMS.

It fell apart in trying to allow both sets of system calls to be used by a single process. This failure is likely a huge reason for Windows NT, as it led to cancelation.

I used Utrix on a Decstation 240 in college.

"However, it proved to be impossible to provide both full ULTRIX and full VMS compatibility to the same application at the same time, and Digital scrapped this plan in favour of having a separate Unix operating system based on OSF/1 (this was variously referred to as PRISM ULTRIX or OZIX)."

https://en.m.wikipedia.org/wiki/DEC_MICA

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