RE: PC20-III

From: MURPHY,JAMES (HP-Ireland,ex2) (James_Murphy_at_exch.dublin.hp.com)
Date: 2001-04-17 14:56:38

Hi Folks,

When I installed my second 100MB disk I originally thought that the boot
block may have had caused some problems, but after booting to a floppy disk
and trying to format the disk from DOS, I found that the BIOS simply did not
'see' the new hard-disk so Rudd may be correct in that it is set-up to only
recognise the original disk. I must take down my machine and see if I can
get the PC20III 20MB hard-disk working in an old 386 machine that I have
hidden somewhere...


Regards,

James.
-----Original Message-----
From: Professor Dredd [mailto:profdredd@yahoo.com]
Sent: 17 April 2001 13:18
To: cbm-hackers@dot.tml.hut.fi
Subject: Re: PC20-III


Hope I'm not interrupting here.

Umm, don't get me wrong here. I'm not even trying to
pretend to know anything about PC hard drives, but it
occured to me ...

Assuming the new hard drive has been low-level
formatted and high-level formatted (from DOS) it
requires one more thing to be used as a boot device:
A BOOT BLOCK

Has a boot block been properly installed?

--- Ruud Baltissen <Ruud.Baltissen@abp.nl> wrote:
> Hallo James,
> 
> > This may not help much but I too have a PC20-III
> with it's original 20MB
> > hard-disk. I tried to replace the 20MB unit with a
> 100MB (IDE not EIDE)
> > drive. This 100MB drive failed with the same
> message you received below.
> > When I plugged back in the original it worked
> fine...
> 
> I did some "research" but I'm getting the feeling
> that C= programmed the
> BIOS to look for a particular drive and no other
> one.
> 
> My manual says that all info (text, program ???) to
> add an HD to a PC is
> supplied with the new HD. So my question is: does
> anyone on the list have
> this "info" ?
> 
> Thanks.
> 
> After writing the above I suddenly remembered that
> the PC10/20 has an
> onboard clock. The Motorola-RTC used from 286's on
> has RAM onboard. Some
> centuries ago I studied the one's used on XT's,
> mostly OKI and MC57???. And
> I vaguely remember that they have RAM as well, but
> I'm not sure.
> 
> Groetjes, Ruud
> 
> http://Ruud.C64.org
> 
> 
> 
> 
> -
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