From owner-freebsd-questions@FreeBSD.ORG Fri Jan 28 22:21:45 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F0FCD16A4CE for ; Fri, 28 Jan 2005 22:21:44 +0000 (GMT) Received: from hosea.tallye.com (joel.tallye.com [216.99.199.78]) by mx1.FreeBSD.org (Postfix) with ESMTP id 846C743D45 for ; Fri, 28 Jan 2005 22:21:40 +0000 (GMT) (envelope-from lorenl@alzatex.com) Received: from hosea.tallye.com (hosea.tallye.com [127.0.0.1]) by hosea.tallye.com (8.12.8/8.12.10) with ESMTP id j0SMLGYs023902 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 28 Jan 2005 14:21:17 -0800 Received: (from sttng359@localhost) by hosea.tallye.com (8.12.8/8.12.10/Submit) id j0SMLF9J023900; Fri, 28 Jan 2005 14:21:15 -0800 X-Authentication-Warning: hosea.tallye.com: sttng359 set sender to lorenl@alzatex.com using -f Date: Fri, 28 Jan 2005 14:21:15 -0800 From: "Loren M. Lang" To: Scott Bennett Message-ID: <20050128222115.GF8442@alzatex.com> References: <200501281708.j0SH88Aq007311@mp.cs.niu.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200501281708.j0SH88Aq007311@mp.cs.niu.edu> User-Agent: Mutt/1.4.1i X-GPG-Key: ftp://ftp.tallye.com/pub/lorenl_pubkey.asc X-GPG-Fingerprint: B3B9 D669 69C9 09EC 1BCD 835A FAF3 7A46 E4A3 280C cc: jerrymc@clunix.cl.msu.edu cc: lorenl@alzatex.com cc: freebsd-questions@freebsd.org Subject: Re: How does FreeBSD access NetBSD, OpenBSD? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 Jan 2005 22:21:45 -0000 On Fri, Jan 28, 2005 at 11:08:08AM -0600, Scott Bennett wrote: > On Fri, 28 Jan 2005 11:18:55 -0500 (EST) Jerry McAllister > wrote: > >> > >> I have FreeBSD, OpenBSD, and NetBSD on the same hard drive of my system. > >> How can I mount the NetBSD or OpenBSD partitions from FreeBSD? > >> > >> Slice 1 - Ext3fs for data between linux/bsd > >> Slice 2 - OpenBSD slice with 4 ufs partitions and swap (a,b,e,f,g) > >> Slice 3 - FreeBSD slice with 4 ufs partitions and swap (a,b,d,e,f) > >> Slice 4 - Extended slice composed of: > >> Slice 5 - NetBSD slice with 4 ufs partitions and swap (a,b,e,f,g) > >> Slice 6 - Unformatted as of yet. > > > >Hmmm, First thing I see is that only 4 slices are allowed on a drive. > > Not true. In fact, I have 8 slices on one of my drives. The slice > entries in the Master Boot Record, wherein they are known as "primary > partition" entries, are four in number, but one of those four can point, > instead of to a "partition" (i.e., "slice" in UNIX terms), to a chain of > "logical partition" table entries, known collectively as the "extended > partition". The FreeBSD kernel appears to have no trouble with this at > all. > The main limitation w.r.t. FreeBSD is that the slice containing the > bootable root file system must be a "primary" rather than a "logical". > This limitation probably means that FreeBSD's boot loader isn't smart > enough to understand and follow the logical partition/slice chain to > locate the file system containing the kernel to be loaded. From what > I've read, LINUX's LILO boot loader *can* do this. Perhaps the FreeBSD > loader will be made smarter someday, but I'd guess that would be a low- > priority item on the developer team's to-do list. Actually, I'm using grub for the MBR bootloader which then loads linux/bsd. Because of this I can have NetBSD entirely in my extended partition like listed above. You can do the same with grub and FreeBSD. > > > Scott Bennett, Comm. ASMELG, CFIAG > ********************************************************************** > * Internet: bennett at cs.niu.edu * > *--------------------------------------------------------------------* > * "A well regulated and disciplined militia, is at all times a good * > * objection to the introduction of that bane of all free governments * > * -- a standing army." * > * -- Gov. John Hancock, New York Journal, 28 January 1790 * > ********************************************************************** -- I sense much NT in you. NT leads to Bluescreen. Bluescreen leads to downtime. Downtime leads to suffering. NT is the path to the darkside. Powerful Unix is. Public Key: ftp://ftp.tallye.com/pub/lorenl_pubkey.asc Fingerprint: B3B9 D669 69C9 09EC 1BCD 835A FAF3 7A46 E4A3 280C