From owner-freebsd-questions@FreeBSD.ORG Fri Jul 6 18:39:02 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8736F1065670 for ; Fri, 6 Jul 2012 18:39:02 +0000 (UTC) (envelope-from b.smeelen@ose.nl) Received: from mail.ose.nl (mail.ose.nl [212.178.134.164]) by mx1.freebsd.org (Postfix) with ESMTP id EDEDB8FC12 for ; Fri, 6 Jul 2012 18:39:01 +0000 (UTC) X-Footer: b3NlLm5s Received: from localhost ([127.0.0.1]) by mail.ose.nl (using TLSv1/SSLv3 with cipher AES256-SHA (256 bits)); Fri, 6 Jul 2012 20:38:50 +0200 Message-ID: <4FF730BA.7050703@ose.nl> Date: Fri, 06 Jul 2012 20:38:50 +0200 From: Bas Smeelen User-Agent: Mozilla/5.0 (X11; Linux i686; rv:13.0) Gecko/20120615 Thunderbird/13.0.1 MIME-Version: 1.0 To: Polytropon References: <4FF71637.9030206@d3photography.com> <20471.8240.321332.987229@jerusalem.litteratus.org> <4FF724AF.9090602@ose.nl> <20120706202558.2a6d7e42.freebsd@edvax.de> In-Reply-To: <20120706202558.2a6d7e42.freebsd@edvax.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-questions@freebsd.org Subject: Re: Does FreeBSD start slices at head boundaries? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 Jul 2012 18:39:02 -0000 On 07/06/2012 08:25 PM, Polytropon wrote: > On Fri, 06 Jul 2012 19:47:27 +0200, Bas Smeelen wrote: >> On 07/06/2012 07:28 PM, Robert Huff wrote: >>> Ryan Coleman writes: >>> >>>> > Anyway just don't make slices at all if your disk is dedicated >>>> > to FreeBSD >>>> >>>> Except for swap, right? >>> Why do you say that? >>> >>> >>> Robert huff >>> >>> >>> >> I think Ryan means partition and not slice? >> I would not recommend no slices at all, It's deprecated to use >> "dangerously dedicated disks" > First of all, it's "dedicated disks", there's nothing dangerous > related. :-) Hi Polytropon I got this from the docs somewhere, let me search Ah the FAQ http://www.freebsd.org/doc/en/books/faq/disks.html#DANGEROUSLY-DEDICATED I don't think it's dangerous either. Thanks for your explanations. > > If you are using the MBR approach ("old way"), you can do > either creating a "DOS primary partition", a slice, which > then will contain your partitions: a swap partition and > one or more UFS partitions. So you have ad0s1a, ad0s1b > and so on. > > When you omit the slice and create the partitions on the "bare > disk", you have a dedicated layout. FreeBSD will run with > it without any problem. It _may_ be possible that some > systems like "Windows" have trouble with this approach, > but if you're going to use FreeBSD only on that disk, there > is no danger, no problem. You have ad0a, ad0b and so on. > > If you are using the GPT approach ("new way"), you create > partitions using a different tool set, setting them to be > a file system or a swap partition. You end up in ad0p1, > ad0p2 and so on. Note that those aren't "DOS primary > partitions" anymore, outdated systems may not properly > recognize them. > > If you label your partitions (you can do that with both > approaches), you don't need to deal with device names at > all. > > > >> Starting with 9 I don't see slices in mount ouput anymore but still >> there are FreeBSD partitions in slices (which is a partitions in dos terms) >> Example / is now disk0p1 it used to be disk0s1a > Correct, this relation can be constructed. > > > > To OP: > > If you omit the slice and just create two partitions (one for > FS and one for swap), FreeBSD will use this fine. Just make > sure to set the boot parameters properly. Or simply use the > GPT-related tools, so you don't have to deal with the question > at all. > > > > Disclaimer: http://www.ose.nl/email