>> The advantage of a write-delay cache is that that the writing can be  
>> done when the system is "idle" (a simple form of multi-tasking).
> That counts as "advanced cache with a lot of code" and can go as far as a
> sort of ramdisk which syncs
> back to the harddisk slowly but steadily when the harddisk has time, in
> big cache.  And it is not what I
> would suggest for DOS...

That's basically what SMARTDRV and its equivalents do, though in a limited
sense (they don't use oodles of memory and cache/RAMDisk the entire hard
drive).  Are you saying that you don't think programs like SMARTDRV "belong"
in DOS?
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