Thanks Eric! I had noticed that FDAPM POWEROFF did both a flush and spindown, but after a couple of seconds it says "Warming up...Back...Back on..." so I wasn't quite sure what it had done. In any case, it sounds like I should be ok holding down the power button at that point. This particular laptop has a very minimal bios, at least the part I can access.
On Sat, Dec 26, 2020 at 10:43 AM Eric Auer <e.a...@jpberlin.de> wrote: > > Hi Marv! > > FDAPM FLUSH (no slash needed) does not rely on the BIOS, > it is just meant to give caches hints to write back all > pending writes. Note that none of the caches shipping > with FreeDOS will pool or delay writes, so you actually > do not need to flush with those :-) > > As soon as the last app returns to the prompt, you can > expect that DOS has written all data and closed files. > > The flush command should work for the following caches: > msclient (not a cache, but network drives), CD Blitz, > PC-Cache, QuickCache, Super PC Kwik / QCache, SMARTDRV. > It also tells DOS and BIOS disks to reset some state. > > The latter could help to make sure that things are > written from the built-in cache of your SD card to > the permanent storage of that card. I would expect > most drives - including SSD and SD ones - to default > to not delay writes unless you enable that? And how > long would such delays be at most? Are there rules > about it? Or experiences here on the list? > You could use the SPINDOWN command to tell disks/SD > to shut down - that should give them a hint to flush > their built-in caches :-) Actually, FDAPM POWEROFF > implies flush and spindown anyway. > > Regards, Eric > > > > _______________________________________________ > Freedos-user mailing list > Freedos-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-user > -- It's all fun and games until someone divides by zero.
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