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Date:      Sun, 15 Apr 2001 21:14:37 +0200
From:      Wilko Bulte <wkb@freebie.demon.nl>
To:        Thomas Stromberg <thomas@stromberg.org>
Cc:        freebsd-scsi@freebsd.org
Subject:   Re: da0: invalid sector size 520
Message-ID:  <20010415211437.A78654@freebie.demon.nl>
In-Reply-To: <0653a1115180f41FE5@mail5.nc.rr.com>; from thomas@stromberg.org on Sun, Apr 15, 2001 at 02:15:45PM -0400
References:  <20010415200125.C77682@freebie.demon.nl> <0653a1115180f41FE5@mail5.nc.rr.com>

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On Sun, Apr 15, 2001 at 02:15:45PM -0400, Thomas Stromberg wrote:
> 
> On Sunday, April 15, 2001, at 02:01 PM, Wilko Bulte wrote:
> 
> > On Sun, Apr 15, 2001 at 12:45:32PM -0400, Thomas Stromberg wrote:
> >> I'm trying to add the following Seagate Barracuda to my FreeBSD box:
> >>
> >> da0: <SEAGATE ST15150N 3514> Fixed Direct Access SCSI-2 device
> >> da0: 10.000MB/s transfers (10.000MHz, offset 15), Tagged Queueing 
> >> Enabled
> >> da0: 4087MB (8242659 520 byte sectors: 255H 63S/T 513C)
> >>
> >> notice the 520 byte sectors? This occurs whenever I try to do any
> >> operations (sysinstall, dd, disklabel) with da0:
> >>
> >> da0: invalid sector size 520
> >
> > Guessing:
> >
> > Could be a disk from a machine that uses hardware RAID or extra 
> > checksumming
> > in the 8 bytes beyond 512 bytes/sector. You can try to reformat the 
> > drive
> > while first selecting 512 bytes/sector.
> >
> > W/
> 
> Not sure where this disk came from, got it from Ebay. The problem I have 
> is I'm getting this error while trying to reformat it.. from sysinstall, 
> disklabel, newfs, and dd.. Any advice on how to re-format this disk that 
> I'm missing? I'm not very experieced with SCSI stuff.

See the man page for 'camcontrol'. You need to give it a low-level SCSI
format. Things like 'dd' etc don't do that for you..

W/

-- 
|   / o / /  _  	 Arnhem, The Netherlands    	email: wilko@freebsd.org
|/|/ / / /( (_) Bulte	 FreeBSD/alpha Powered 		http://www.freebsd.org 	

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