From owner-freebsd-stable@FreeBSD.ORG Wed Jul 20 03:49:12 2011 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BF2A61065670 for ; Wed, 20 Jul 2011 03:49:12 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from asmtpout020.mac.com (asmtpout020.mac.com [17.148.16.95]) by mx1.freebsd.org (Postfix) with ESMTP id A682C8FC13 for ; Wed, 20 Jul 2011 03:49:12 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; CHARSET=US-ASCII Received: from [17.153.21.177] by asmtp020.mac.com (Oracle Communications Messaging Exchange Server 7u4-20.01 64bit (built Nov 21 2010)) with ESMTPSA id <0LOM0085259IAU50@asmtp020.mac.com> for freebsd-stable@freebsd.org; Tue, 19 Jul 2011 20:48:57 -0700 (PDT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.4.6813,1.0.211,0.0.0000 definitions=2011-07-20_01:2011-07-19, 2011-07-20, 1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx engine=6.0.2-1012030000 definitions=main-1107190259 From: Chuck Swiger In-reply-to: <20110720031431.GA33758@icarus.home.lan> Date: Tue, 19 Jul 2011 20:48:54 -0700 Message-id: <84CC369B-4E70-414C-8C57-5FE772C7134F@mac.com> References: <20110718234124.GA5626@icarus.home.lan> <20110719211039.GA16085@server.vk2pj.dyndns.org> <02D367A5-CA74-4E8A-BE3E-F81485B287A7@mac.com> <4e26a250.iKKzhkOLoTB3sdOr%perryh@pluto.rain.com> <20110720031431.GA33758@icarus.home.lan> To: Jeremy Chadwick X-Mailer: Apple Mail (2.1084) Cc: freebsd-stable@freebsd.org, perryh@pluto.rain.com, peterjeremy@acm.org Subject: Re: Status of support for 4KB disk sectors X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Jul 2011 03:49:12 -0000 On Jul 19, 2011, at 8:14 PM, Jeremy Chadwick wrote: > On Wed, Jul 20, 2011 at 02:39:28AM -0700, perryh@pluto.rain.com wrote: >> IIRC, Plextor (and maybe some others) had a switch to select 512 or >> 2048 as the default transfer size, precisely so that they could be >> used as boot devices with systems that supported only 512. Come to think of it, I do remember that switch, yes. Do you happen to know whether this limitation was part of the Sun hardware, or of SunOS? CMU had a lot of Sun3 machines and NeXT clusters, so I ended up mixing NeXT CD-ROM and the Canon? magneto-optical drives with Sun H/W, and vice versa. SunOS wasn't the only O/S which was run on a m68k Sun box. ;-) > I don't think Plextor was around back then; they used to be called TEXEL > back in the early 90s. The only Sun SCSI CD drives I saw were external > and caddy-based, so I mentally correlate them with NEC. Back then I > wasn't looking at brands as much as I do today, though. I'm pretty sure some folks had NEC caddy drives as well. Regards, -- -Chuck