DOS ain't dead

I compared MS-DOS v5, FreeDOS, Enhanced DR-DOS, and the lMS-DOS based lDOS in this question and answer. All using the same dosemu2 and FreeCOM. https://retrocomputing.stackexchange.com/questions...em-with-the-smallest-low-memory-area-footprint/

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> Did you also investigate the situation without UMBs and / or the HMA being
> available?

No, not yet. I'm intending to test the lDOS kernel with less memory available at a later point, regarding the question in https://github.com/SvarDOS/edrdos/issues/136

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> I compared MS-DOS v5, FreeDOS, Enhanced DR-DOS, and the lMS-DOS based lDOS
> in this question and answer. All using the same dosemu2 and FreeCOM.
> https://retrocomputing.stackexchange.com/questions...em-with-the-smallest-low-memory-area-footprint/

Did you also investigate the situation without UMBs and / or the HMA being available?

> I compared MS-DOS v5, FreeDOS, Enhanced DR-DOS, and the lMS-DOS based lDOS
> in this question and answer. All using the same dosemu2 and FreeCOM.
> https://retrocomputing.stackexchange.com/questions...em-with-the-smallest-low-memory-area-footprint/

I only used MSDOS (mostly 6.x after it was out) in the day, but using 4dos command interpreter instead of command.com freed up more memory.