From owner-freebsd-questions Sun Jul 14 5:21:54 2002 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 1D7D537B400 for ; Sun, 14 Jul 2002 05:21:50 -0700 (PDT) Received: from zim.0x7e.net (zim.0x7e.net [203.38.184.132]) by mx1.FreeBSD.org (Postfix) with ESMTP id 790F743E4A for ; Sun, 14 Jul 2002 05:21:47 -0700 (PDT) (envelope-from listone@deathbeforedecaf.net) Received: from goo.0x7e.net ([203.38.184.164] helo=goo) by zim.0x7e.net with smtp (Exim 3.33 #1) id 17TiQQ-0006ig-00 for freebsd-questions@freebsd.org; Sun, 14 Jul 2002 21:54:30 +0930 Message-ID: <004a01c22b31$1b706da0$a4b826cb@goo> From: "Rob" To: Subject: FFS on CD-ROM - can it be done? Date: Sun, 14 Jul 2002 21:52:22 +0930 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Wise Ones, I'm trying to put a FFS filesystem on CD-ROM. My current attempt builds a virtual filesystem with vnconfig + disklabel + newfs, then writes the image file using burncd. I end up with something that half works - df and fsdb can see the filesystem, but ffsinfo and mount can't. # mount -r /dev/acd1c /mnt mount: /dev/acd1c on /mnt: incorrect super block # df -h /dev/acd1c Filesystem Size Used Avail Capacity Mounted on /dev/acd1c 678M 256M 368M 41% # ffsinfo /dev/acd1c ffsinfo: partition is unavailable # fsdb -r /dev/acd1c ** /dev/acd1c (NO WRITE) CANNOT READ: BLK 2048 CONTINUE? yes THE FOLLOWING DISK SECTORS COULD NOT BE READ: Examining file system `/dev/acd1c' Last Mounted on /var/spool/cdrom-images/mount current inode: directory I=2 MODE=40755 SIZE=512 MTIME=Jul 6 16:17:23 2002 [0 nsec] CTIME=Jul 6 16:17:23 2002 [0 nsec] ATIME=Jul 6 16:23:36 2002 [0 nsec] OWNER=root GRP=wheel LINKCNT=5 FLAGS=0 BLKCNT=2 GEN=baec144 fsdb (inum: 2)> q An exchange on the NetBSD/Sparc list a couple of years ago[1] mentioned that their CD-ROM driver doesn't actually read the disklabel but returns a hardcoded ISO layout. On the other hand, Solaris CDs can be partitioned like normal disks (the Software CD has 1 UFS slice and several HSFS slices). Does FreeBSD support non-standard CD layouts? Thanks for the help Rob. [1] http://www.netsys.com/netbsd-port-sparc/1999/04/msg00080.html -- Trust the Computer. The Computer is your friend. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message