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Re: write alignment matters?
On Mon, Jun 27, 2011 at 02:00:54PM -0400, Paul Koning wrote:
> >> It took the invention of that paragon of OS's - DOS - to teach
> >> the populace that simply pulling the device/media was an acceptable
> >> operating procedure.
> > That's hardly fair. Until the Mac appeared in 1984 every small
> > computer that had a floppy drive had a floppy drive you could
> > open/eject arbitrarily, and none of them required explicit unmount.
> > This was true of at least some bigger systems as well; as I recall
> > RT-11 did not require explictly unmounting floppies before changing
> > them.
> Sure it is fair. The fact that some operating systems had
> extremely simple/primitive file systems without any caching means
> that those systems were capable of surviving file device pulls.
It is not fair to blame it on DOS; DOS was neither the first nor the
last system to work this way. Many of them had caching (even writeback
> But it isn't reasonable to consider that a feature. RT-11 was in
> fact an unusual example in its days; few if any operating systems
> of that era had a "just yank it" property.
Oh, I'm not saying it's a feature. However, requiring explicit unmount
(up to and including killing off uncooperating or leftover processes)
is not a feature either.
David A. Holland
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