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From: cssjs2@ufhx1.ufh.ac.za (Mr JM Scheepers)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: How to access all of a 676MB ESDI Seagate/WREN under DOS 5 ?
Message-ID: <1991Jun20.134233.20055@ufhx1.ufh.ac.za>
Date: 20 Jun 91 13:42:33 GMT
References: <1991Jun17.124112.9416@ufhx1.ufh.ac.za> <CG108W3.91Jun17220036@icogsci1.icogsci1.ucsd.edu> <31526@hydra.gatech.EDU> <1991Jun18.224611.14197@beach.csulb.edu> <1991Jun18.222551.31540@kuhub.cc.ukans.edu>
Organization: University of Fort Hare, Alice, Ciskei
Lines: 29

My problem with debug was saying "G C800:5" instead of "G=C800:5".
However, that did not solve my problem of the missing 200 MB!

I've managed to scrounge a CDC-WREN version of the DiskManager software
(V3.60). Unfortunately it doesn't have a menu entry for the 94196 model.
No matter. It can take non-standard parameters.

Included is SWBIOS.com, a bios extender which gives the DM the right disk
info (i.e., 1630 cyl vs 1024 cyl). Partitioning options work reasonably,
with a 33 MB PRI DOS partition (I'm settling for DOS 3.3 vs DOS 5 beta)
and a 536 MB R/W second partition. It even inits and verifies a third R/W
partition of 105MB for an apparent total of 694MB. I see drives C: and D:.
I can change to default drive E:, but get a "General Failure" error when
trying to do a "dir", or, when trying to store a file, "file creation error".
OK, so drive E: can't and won't be used. (I wanted one HUGE C: drive!)

The controller card's a DTC6280-15TX, and BIOS CMOS should be set to type 1.
There are 2 options in the controllers disk config utility:
Option A: NON-TRANSLATION has a problem: Applications using int 13 may
"wrap" to cyl 0 and corrupt data. This option is not for me.
Option B: TRANSLATION (63/60/51 sect/track) has these steps:
(1) CMOS set to disk type 1 (10MB?) (2) run DEBUG to specify xlation mode.
(3) Load SWBIOS.com (4) Run DM loaded with  /7 /N switches
(to ensure opportunity to correct the  sector/track info (54? in my case) )

Well, it never bothered to ask for correct sect/track info. In any case,
I now have 2 drives: a 33 MB dos 3.3 boot partition, and 467 533 824 Bytes.
(It seems clusters are 32KB in size on the D: drive.)
PS. Chkdsk on this drive simply says: Divide Overflow \ Exiting...