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"cd ..." etc. worked in 4DOS, an alternative (and extended) DOS shell: https://en.wikipedia.org/wiki/4DOS.



I think it was standard DOS, from maybe DOS 5 upwards?


I was thinking it worked in MS DOS after some point, but I was remembering more like Windows 95 era. I don't think it worked in MS DOS 6.x, because IIRC that's when I was using 4DOS. However, it doesn't work in Windows 10 CMD.EXE.




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