Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!hplabs!hpfcso!hpldola!ppa
From: ppa@hpldola.HP.COM (Paul P. Austgen)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Re: Low-level hard disk format - Here's How
Message-ID: <11250111@hpldola.HP.COM>
Date: 28 Nov 89 16:07:57 GMT
References: <29202@genrad.UUCP>
Organization: HP Elec. Design Div. -ColoSpgs
Lines: 9

Hard disc controllers do not always have ROM programs at c800:5
to format discs.  Some manufacturers rely on programs shipped
with their disc drives.  If so, then jumping here just forces the
processor to go off into never-never land.  You can check for
this by UNASSEMBLING at this address and see if there is any real
code there.

I have heard that Disk Manager by Ontrack will low-level format
most all disks.  Did you try the Spinrite re-format?