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From: mms00786@uxa.cso.uiuc.edu (Milan Mahendra Shah)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: Hard disk help wanted
Message-ID: <1990Aug1.000408.18601@ux1.cso.uiuc.edu>
Date: 1 Aug 90 00:04:08 GMT
References: <127560@puff.encore.com> <5462@uwm.edu>
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Organization: University of Illinois at Urbana
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bnk@csd4.csd.uwm.edu (Bob N Keenan) writes:

>In article <127560@puff.encore.com> lnguyen@encore.com (Lucy Nguyen) writes:
>>
>>Does anyone know how to reinstall a hard disk without losing
>>its contents? I want to take a 10 Meg MM-212 from an AT and move
>>it to a 286. There's a 40 Meg Seagate on the 286 also. I don't
>>remember what the controller is, but it handles both floppies and HD's.
>>I really only need the installation routine for the 10 Meg, since I've long
>>since lost the papers for it. The controller is asking for some code
>>address which the manufacturer gave. Any help is greatly appreciated.
>>
>>Lucy
> The "code" you are talking about is a bios utility that is addressed
> with dos DEBUG.  The controller card contains a built in setup/configure
> in the hardware.  You need the address of where it is located. It would
> look something like (at the DEBUG prompt): g=c800:5. This is the address
> I remember off the top of my head for the Western Digital controller
> compuadd ships with their st-251 40 meg drives.  Your best bet is to
> find the exact make of the controller and then ask if anyone knows the 
> debug address for it. 

Whoa, I beg to differ. g=c800:5 will most probably low level format the
HD if the controller has on board ROM or a ROM Extension (probably
unlikely for an AT type controller). Low Level formatting will definitely
destroy all data, which is *not* what Lucy wants. I believe the code
being requested is most probably her AT BIOS (or clone thereof) telling
her that it has detected a new drive and needs a drive type code for that.
On almost all BIOSes I have seen, 10 Meg Drive type is normally type 1.
Once again, c800:5 is normally not the configure routines in the general
sense where configure = alter contents of CMOS.

Milan
.