Path: utzoo!utgpu!water!watmath!clyde!att!ihnp4!richp1!kjohn
From: kjohn@richp1.UUCP (John K. Counsulatant)
Newsgroups: comp.sys.amiga
Subject: Hard Disk Problems
Summary: My C.Ltd SCSI/ST238 bombs
Keywords: C.Ltd Harddrive SCSI problems
Message-ID: <267@richp1.UUCP>
Date: 25 May 88 20:42:09 GMT
Reply-To: kjohn@richp1.UUCP (John Scott Kjellman (consultant))
Distribution: na
Organization: Rich Inc., Franklin Park, IL
Lines: 39

(This is a repost, due to phone problems my first posting got lost.....)

I am having problems with "bad blocks" on my C. Ltd SCSI.
When using the PD program Tracer (I am modifing it for SPEED) it
ocassionally (read 40-50% of the time) creates a bad block on my harddisk.
The bad block is always in the middle of the picture and can be found by
using DiskDoctor.  When I try to re-format (HDFormat (i.e. low level)) I
don't come up with any bad blocks.  Does anyone know how to use DiskDoctor
information to update a bad sector list (need cylinder, surface and BFI
(byte offset)?  

Please help me, I am losing my faith in my Amiga (oooohhhh nnnnooooo!) as a
development machine, this problem has cost me MANY MAN HOURS!!!

P.S.
	Oh yea, my current configuration is:
	Amiga 1000 (March 86 vintage)
	512K memory
	PROPER GROUNDED PALS on Amiga daughter board
	C.Ltd SCSI controller w/SCSIDOS v2.01 andrequired PAL upgrade
	Adaptec 4070a RLL SCSI<->ST506 adapter
	Seagate ST238R 30Mb RLL certified harddisk

P.P.S.
	I also had trouble with the mount list, i.e. C.Ltd claims the ST238
	to be a 610 cylinder drive while Seagate says 615, who is right?
	Also does anyone have a GOOD mountlist for the above hardware that
	can be used as a floppy drive (i.e. I had one but it gave me
	problems.).


	THANX IN ADVANCE			KJohn (John Kjellman)

Contact me by snail at      John Kjellman
			    17302 Park Avenue
			    Lansing, IL 60438
			    voice:1(312)418-1236
or E-mail:  ihnp4!richp1!kjohn    (I have had problems with this so be
careful!)   I will post a summary if warrented.