From owner-freebsd-questions@FreeBSD.ORG Tue Apr 6 00:44:24 2010 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 2A2411065673 for ; Tue, 6 Apr 2010 00:44:24 +0000 (UTC) (envelope-from tajudd@gmail.com) Received: from mail-yx0-f174.google.com (mail-yx0-f174.google.com [209.85.210.174]) by mx1.freebsd.org (Postfix) with ESMTP id CE9688FC0C for ; Tue, 6 Apr 2010 00:44:23 +0000 (UTC) Received: by yxe4 with SMTP id 4so2552184yxe.28 for ; Mon, 05 Apr 2010 17:44:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:received:message-id:subject:from:to:cc:content-type; bh=nCbg+iLUjRBIwOonT5ifSu93YNPMzma3QIm/sw2yZ5M=; b=MEoU8zbLLpdziixD3CbkBxT0I+wAcGrjR3ct/owGfeV6kg4dNmtuVMdbATragHzyXF wVlHaKdkcAl06ecbrkIVbzDsLyuHJAWD9uBM/BaQgzhP6wvsZoMhVKHxG704YO6lLmYg P82EZarEIx7rggJczx9qLlt4I5eC2e4jKh1vA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=k/AOMMTuvDQM4eORdXQ7KpuWxvLcibsYYtdnTqslRkosP9Srcv39iSmTX73MvpvOff cFP46Qih4BW9uE20MHl++aRJTkhxs2auwebOr0NmyBaevuZA/alrGTZW8QYqdghekYgG kmY9++t1qtlrYGpY6+fa0X3wERlK9DIU/JhqU= MIME-Version: 1.0 Received: by 10.231.152.209 with HTTP; Mon, 5 Apr 2010 17:44:22 -0700 (PDT) In-Reply-To: <7B9397B189EB6E46A5EE7B4C8A4BB7CB3B6F7FAD@MBX03.exg5.exghost.com> References: <7B9397B189EB6E46A5EE7B4C8A4BB7CB3B6F7D05@MBX03.exg5.exghost.com> <7B9397B189EB6E46A5EE7B4C8A4BB7CB3B6F7FAD@MBX03.exg5.exghost.com> Date: Mon, 5 Apr 2010 18:44:22 -0600 Received: by 10.101.125.4 with SMTP id c4mr14895639ann.225.1270514662750; Mon, 05 Apr 2010 17:44:22 -0700 (PDT) Message-ID: From: Tim Judd To: Peter Steele Content-Type: text/plain; charset=ISO-8859-1 Cc: "freebsd-questions@freebsd.org" Subject: Re: How customized can an mfsroot be? 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: Tue, 06 Apr 2010 00:44:24 -0000 On 4/5/10, Peter Steele wrote: >> But ... why are you constricting yourself to use mfs_root? I have many >> times ran FreeBSD completely from CDrom, which >>will give you all 700 (or a DVD, 4.3G) usable space. >> >>I'd be happy to help, if you have questions. but please direct the >> questions to the mailing list. > > The reason I was doing it this way was because I didn't know how to provide > the CD-ROM environment a writeable file system for /tmp and /var. Obviously > these have to be setup as some kind of ram based file system. What's the > trick? > > If FreeBSD cannot write to /tmp or /var on boot, it automatically creates a MFS filesystems for those mountpoints and mounts them during boot. You don't need to do anything. It works as the same readonly compactflash environments out there.