*BSD News Article 2756


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Newsgroups: comp.unix.bsd
Path: sserve!manuel!munnari.oz.au!uunet!mcsun!Germany.EU.net!news.netmbx.de!zrz.tu-berlin.de!math.fu-berlin.de!hrz.tu-chemnitz.de!israel
From: israel@informatik.tu-chemnitz.de (Andreas Israel)
Subject: Success, but HD problems (Controller WD1007V)
Message-ID: <israel.712428515@hrz.tu-chemnitz.de>
Sender: bin@hrz.tu-chemnitz.de (Owner of all binaries)
Organization: tu-chemnitz
Date: Wed, 29 Jul 1992 16:48:35 GMT
Lines: 38

Hello,

I finally managed to install 386BSD 0.1 on a 486 with HD controller
WD1007V (ESDI). The install program put very strange things in the
disklabel, so I used the fixit.fs to write the disklabel and installed
it manually.
Although the system boots from the hd and goes multi-user, I have
strange effects in the filesystem. There are some blocks I can write,
but I cannot read it.
Bad blocks! Bad144? I thought of that, but whenever I try to enable
bad sector forwarding, the system says that my bad sector table is
corrupt. But it is also impossible to clear the bad sector table with
'bad wd0 0'.
BTW: I tried dd to find the bad blocks, but it will stop on the first
occurance and refused to read behind this block even with skip=bno.

(I lowlevel-formatted the disk before I started and the program found
one additional bad sector and added it to the bad sector table of the
disk - but it used the physical sectors of the hd. - Is it possible that
I could overwrite this bad sector table with the filesystem, but the
controller refuses attempts to initialize the bad sector table?)

Maybe my disktab entry is wrong? Should I use the parameter the
controller simulates? Or should I use the physical parameter of the
hd?
Could someone with deeper insight to this controller business give me
some ideas on how this bad sector forwarding works and what I can try
next to get rid of these effects?

Any help appreciated!

Andreas

--
Name: Andreas Israel   Chemnitz University of Technology        Email:
Nick: Easy             Dept. of Computer Science         ai@hrz.tu-chemnitz.de
Phone: +49 371 668 423 Germany, O-9010 Chemnitz, PSF 964 
"Think of your family tonight. Try to crawl home after the computer crashes."