This is a known perf issue with older machines. For FAT16 (which 1GB should fit in), there's FREESP (https://github.com/ChartreuseK/FREESP). You may want to give that a try.
On Tue, Aug 13, 2024 at 4:11 PM Trevor Campbell via Freedos-user < freedos-user@lists.sourceforge.net> wrote: > I have Freedos installed on 8086 hardware using an SD Card with a 1Gb > FAT-16 partition. (I have so far been unable to get a FAT-32 partition > to work) > > After boot the first time I run a `DIR` command e.g. > > ``` > > C:\>dir > > ``` > > The directory list returns quickly, but the number of bytes free takes > another 30 seconds to appear. Subsequent `DIR` commands return > immediately whether in the same directory or elsewhere. > > Now I realise my 8MHz 8086 is x,000 times slower than my linux notebook > and the 1GByte partition is >30 times larger than the original hard > drive in the machine from 1986, but am still wondering if this is just > how it is or if there is some sub-optimal code somewhere in there that > could be given a tweak. > > I dug through as much of the code as I could and found the free bytes is > obtained by a DOS Interrupt call, int 21,7303 if implemented or int > 21,36 otherwise. I started digging through the kernel code, but > unfortunately my x86 assembler knowledge is far to weak to make any > headway there. > > Trevor > > > > _______________________________________________ > Freedos-user mailing list > Freedos-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-user >
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