From owner-freebsd-questions@freebsd.org Fri Oct 2 21:02:07 2015 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 881A7A0E9AB for ; Fri, 2 Oct 2015 21:02:07 +0000 (UTC) (envelope-from wam@hiwaay.net) Received: from fly.hiwaay.net (fly.hiwaay.net [216.180.54.1]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 57FB712EE for ; Fri, 2 Oct 2015 21:02:06 +0000 (UTC) (envelope-from wam@hiwaay.net) Received: from kabini1.local (dynamic-216-186-213-32.knology.net [216.186.213.32] (may be forged)) (authenticated bits=0) by fly.hiwaay.net (8.13.8/8.13.8/fly) with ESMTP id t92L25Zs020950 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO) for ; Fri, 2 Oct 2015 16:02:05 -0500 Subject: Re: Geom question References: <560EDE45.3040605@hiwaay.net> <3D81C7BC-1A31-4046-88B7-50F25EA3B952@ccsys.com> Cc: FreeBSD Questions !!!! From: "William A. Mahaffey III" Message-ID: <560EF0CC.80805@hiwaay.net> Date: Fri, 2 Oct 2015 16:07:34 -0453.75 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: <3D81C7BC-1A31-4046-88B7-50F25EA3B952@ccsys.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Oct 2015 21:02:07 -0000 On 10/02/15 15:31, Chad J. Milios wrote: >> On Oct 2, 2015, at 3:41 PM, William A. Mahaffey III wrote: >> >> I am prepping to provision 2 boxen w/ FreeBSD 9.3R, preferably from a thumb drive. I would like to add a 'utils' directory w/ some scripts I wrote to automate the partitioning/slicing of the HDD's (2X on 1 box, 8X on the other), & also accumulate output from the install process in case questions arise. To that end, I am planning on partitioning/slicing a thumb drive, prepping it to be bootable following examples on the gpart man page, & copying verbatim stuff from the memstick.img for 9.3R that I downloaded a while back, as well as adding my utils directory. Reading up on gpart & geom raises 1 question: can I do all these preps on a disk image file I create w/ dd, or do i do them in place on the target memstick, then dd the results onto an on-disk image for safekeeping ? Put another way, can a disk image created by dd be a 'geom' for gpart ? TIA & have a good one. >> >> -- >> >> William A. Mahaffey III > In a way, yes. `mdconfig -f filename` will make your file accessible as a virtual device. > Thanks for the info. I proceeded w/ trying to setup /dev/md0 as a bootable disk image as follows: [root@kabini1, /etc, 3:54:31pm] 758 % dd if=/dev/zero of=/home/memstick.img count=3699 bs=1m 3699+0 records in 3699+0 records out 3878682624 bytes transferred in 8.324621 secs (465929036 bytes/sec) [root@kabini1, /etc, 3:55:23pm] 759 % cat ~wam/FreeBSD/9.3/README.createBootableMBR-SD.txt MBR: Master Boot Record is used on PCs and removable media. Requires the GEOM_PART_MBR kernel option. The GEOM_PART_EBR option adds support for the Extended Boot Record (EBR), which is used to define a logical partition. The GEOM_PART_EBR_COMPAT option enables backward compatibility for partition names in the EBR scheme. It also prevents any type of actions on such partitions. Create an MBR scheme on ada0, then create a 30GB-sized FreeBSD slice, mark it active and install the boot0 boot manager: /sbin/gpart create -s MBR ada0 /sbin/gpart add -t freebsd -s 30G ada0 /sbin/gpart set -a active -i 1 ada0 /sbin/gpart bootcode -b /boot/boot0 ada0 Now create a BSD scheme (BSD label) with space for up to 20 partitions: /sbin/gpart create -s BSD -n 20 ada0s1 Create a 1GB-sized UFS partition and a 4GB-sized swap partition: /sbin/gpart add -t freebsd-ufs -s 1G ada0s1 /sbin/gpart add -t freebsd-swap -s 4G ada0s1 Install bootstrap code for the BSD label: /sbin/gpart bootcode -b /boot/boot ada0s1 [root@kabini1, /etc, 3:55:50pm] 760 % mdconfig -f /home/memstick.img md0 [root@kabini1, /etc, 3:56:26pm] 761 % /sbin/gpart create -s MBR md0 md0 created [root@kabini1, /etc, 3:58:45pm] 762 % /sbin/gpart add -t freebsd -s 3698M md0 md0s1 added [root@kabini1, /etc, 3:59:14pm] 763 % /sbin/gpart set -a active -i 1 md0 active set on md0s1 [root@kabini1, /etc, 3:59:25pm] 764 % /sbin/gpart bootcode -b /boot/boot0 md0 bootcode written to md0 [root@kabini1, /etc, 3:59:44pm] 765 % /sbin/gpart create -s BSD md0s1 md0s1 created [root@kabini1, /etc, 3:59:57pm] 766 % /sbin/gpart add -t freebsd-ufs md0s1 md0s1a added [root@kabini1, /etc, DING!] 767 % /sbin/gpart bootcode -b /boot/boot md0s1 bootcode written to md0s1 [root@kabini1, /etc, 4:00:25pm] 768 % lltr /dev/md0*; date crw-r----- 1 root operator 0xd2 Oct 2 15:56 /dev/md0 crw-r----- 1 root operator 0xd5 Oct 2 15:59 /dev/md0s1 crw-r----- 1 root operator 0xd6 Oct 2 16:00 /dev/md0s1a Fri Oct 2 16:00:44 MCDT 2015 [root@kabini1, /etc, 4:00:44pm] 769 % mount /dev/md0s1 /media/sd/ mount: /dev/md0s1: Invalid argument [root@kabini1, /etc, 4:01:16pm] 770 % mount -t ufs /dev/md0s1 /media/sd/ mount: /dev/md0s1: Invalid argument [root@kabini1, /etc, 4:01:34pm] 771 % mount -t ufs /dev/md0s1a /media/sd/ mount: /dev/md0s1a: Invalid argument [root@kabini1, /etc, 4:01:41pm] 772 % & I appear to be stuck trying to mount the /dev/md0 device so I can copy stuff to it :-/. Any clues appreciated. TIA & have a good one. -- William A. Mahaffey III ---------------------------------------------------------------------- "The M1 Garand is without doubt the finest implement of war ever devised by man." -- Gen. George S. Patton Jr.