From owner-freebsd-hackers Fri Jun 2 18:53:09 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id SAA12555 for hackers-outgoing; Fri, 2 Jun 1995 18:53:09 -0700 Received: from gndrsh.aac.dev.com (gndrsh.aac.dev.com [198.145.92.241]) by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id SAA12549 for ; Fri, 2 Jun 1995 18:53:06 -0700 Received: (from rgrimes@localhost) by gndrsh.aac.dev.com (8.6.11/8.6.9) id SAA08914; Fri, 2 Jun 1995 18:52:48 -0700 From: "Rodney W. Grimes" Message-Id: <199506030152.SAA08914@gndrsh.aac.dev.com> Subject: Re: Can't boot a new 2.0.5A system To: fcawth@squid.umd.edu (Fred Cawthorne) Date: Fri, 2 Jun 1995 18:52:48 -0700 (PDT) Cc: FreeBSD-hackers@FreeBSD.Org (FreeBSD hackers) In-Reply-To: <9506021700.AA22388@squid.umd.edu> from "Fred Cawthorne" at Jun 2, 95 01:00:07 pm X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 1654 Sender: hackers-owner@FreeBSD.Org Precedence: bulk > > > > > > > > > > > Geometry correct? > > > > > > > > Hmmmm... I thought one of the reasons why I bought a SCSI drive > > > > was to avoid worrying about stuff like geometry and cylinder > > > > translations and what not. At least I never had to worry about it on > > > > any other computer with a SCSI disk until now. The older installers > > > > guessed it correctly, so I didn't touch the settings on this one. > > > > > > > > When in doubt freebsd looks to see what DOS did, so it you have a DOS > > partition, it'll use those geometry figures.. > > > > by definition then at least the BIOS and FreeBSD will match.. > > > The new install got the wrong geometry even when I had FreeBSD 2.0 on > the entire disk... Perhaps there was a problem with the stuff that > an old fdisk created??? I don't remember if I ever installed with an NCR > controller before. (I used to have an Adaptec 1542CF on here...) > So, maybe my NCR scsi bios is messing things up??? > Are you guys sure that the user setting of the geometry thing (i.e. G in > the fdisk screen) is working properly?? BIG CAUTION. The NCR controller does not always use the 32 sector 64 head translation that the adaptec does. I have found that the NCR is using 34 head 62 sector geometries on the 1 G drives I am using and not sure on the 535MB since I have not installed DOS on one of them to see. Be very carefull when trying to move from one controller to another, translation schemes vary between manufactures! -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation Company Custom computers for FreeBSD