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From: Franklin 
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@Date: Mon, 15 Dec 2003 22:45:58 -0800 (PST)
Subject: Re: /!SETMAX
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--- "Robert Traynor  (BobT)"
 wrote:
> On Mon, 15 Dec 2003 14:30:35 +0100, Hayo Baan wrote:
> 
> > Felix Miata wrote:
> > >Robert Traynor (BobT) wrote:
> > >>On Mon, 15 Dec 2003 10:41:50 +0100, Hayo Baan
> wrote:
> 
> 
> 
> > Well, the example of the Compaq machine I
> described wouldn't boot if you 
> > let it think the big HD was in fact connected.  By
> specifying in the 
> > BIOS no second HD was present, we overcame this
> problem.  So maybe Bob 
> > is refering to this?
> 
> Look, this is just going in circles.  I thought I
> could just ask about /!SETMAX.
> At least Felix suggestion to eliminate the IDE
> switch has eliminated that
> device from the list of suspects.
> 
> 
> Originally, when it was NOT jumpered, eCS would
> sometimes install 
> and sometimes lockup with intermittant beeping from
> the case speaker.  
> When I finally got eCS to be fully installed and
> finally updated with the 
> eCSMT, it still locked up or freezed for hours at a
> time, and still beeped.
> 
> The system will NOT support the real 40gb size of
> the hard drive.
> This was eCS 1.1 with the latest Dani drivers, both
> Atapi and IDE.  
> The Ibm IDE driver would not work at all.  And
> briefly, I had also 
> installed winXP on the 40gb setting and even it
> locked up. Now
> deleted xp of course.
> 
> The hard drive is a 40gb Seagate IDE and is NOW
> jumpered to limit the
> size to 32gb due to the limitations of the old
> motherboard.
> After setting the 32gb jumper on the hard drive, the
> system become
> more useable, a 40% improvement.!
> 
> 
> Reading the docs of the Danis506.add driver I found
> that the default
> with the danis506 driver is to enable complete use
> of the hard drive,
> and that the SETMAX command below reverses this
> default.
> 
> BASEDEV=DANIS506.ADD /A:0 /U:0 /!SETMAX
> 
> The /!SETMAX command made a large improvement with
> the report
> of 9500 (approx) "misaligned" now reduced to only
> "95 misaligned".
> I consider the Setmax command in conjunction with
> the 32gb jumper 
> setting to be a total of a 95% improvement, compared
> to the original
> post eCS install, un-jumpered state.
> 
> 
> The fact that the 32gb setting and the Dani setmax
> add up to far better
> system than I started out with, shows me that this
> is the route to travel 
> to get a resolution.  I am going to go back to the
> dani docs and read 
> them all again.

This is a very good idea. Unfortunately there are a
lot of things to try (one at a time). I was looking
through and what caught my eye about 3/4 down the doc
for danis506, just before the part about setmax is
this:

>   Beginning with gamma 4 I introduced an additional
'safety net'. Some
     hardware tells to be perfectly capable of doing
DMA transfer operations but
     fails miserably when it comes to a real life
test. In such a case booting
     will succeed eventually but with a retry in PIO
mode for each chunk of data
     (and a very upset driver beeping all of the
time).

     To prevent such an outcome, at the very end of
driver initialization an
     additional check is carried out. If a device was
elegible for DMA
     transfers, a DMA mode was chosen and the device
commanded to do so, it is   <

It looks like you could cut out or modify dma
transfers, block INt13 calls, stuff like that.

I had a problem similar to this a few years ago, just
don't remember how I fixed it. I think it was the old
IBM driver and changing to dani drivers cured it. I
cannot remember what parameters I added to it, as I
don't need any now. It is very nerve wracking to have
your computer keep beeping at you during a 15 minute
bootup. The disk activity light would flicker for a
second, then stop for a moment, beep, then another
flicker, pause, beep, etc. It wasn't a size problem
though.

Franklin


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