From owner-freebsd-questions@FreeBSD.ORG Sat Jul 10 17:50:21 2004 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 4500E16A4CE for ; Sat, 10 Jul 2004 17:50:21 +0000 (GMT) Received: from pd5mo3so.prod.shaw.ca (shawidc-mo1.cg.shawcable.net [24.71.223.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1815B43D45 for ; Sat, 10 Jul 2004 17:50:21 +0000 (GMT) (envelope-from aardvark@saintaardvarkthecarpeted.com) Received: from pd4mr3so.prod.shaw.ca (pd4mr3so-qfe3.prod.shaw.ca [10.0.141.214]) by l-daemon (iPlanet Messaging Server 5.2 HotFix 1.18 (built Jul 28 2003)) with ESMTP id <0I0N005Y0D4OFR@l-daemon> for questions@freebsd.org; Sat, 10 Jul 2004 11:41:12 -0600 (MDT) Received: from pn2ml7so.prod.shaw.ca ([10.0.121.151]) by pd4mr3so.prod.shaw.ca (Sun ONE Messaging Server 6.0 HotFix 1.01 (built Mar 15 2004)) with ESMTP id <0I0N00IM9D4OYZG0@pd4mr3so.prod.shaw.ca> for questions@freebsd.org; Sat, 10 Jul 2004 11:41:12 -0600 (MDT) Received: from francisco.saintaardvarkthecarpeted.com (S010600609761a671.vc.shawcable.net [24.87.202.31]) by l-daemon (iPlanet Messaging Server 5.2 HotFix 1.18 (built Jul 28 2003)) with ESMTP id <0I0N00F2QD4NO3@l-daemon> for questions@freebsd.org; Sat, 10 Jul 2004 11:41:12 -0600 (MDT) Received: from localhost (hardesty.saintaardvarkthecarpeted.com [192.168.23.1]) by francisco.saintaardvarkthecarpeted.com (8.12.11/8.12.11) with ESMTP id i6AHfAeM025935; Sat, 10 Jul 2004 10:41:10 -0700 Received: from aardvark by localhost with local (Exim 4.32) id 1BjLqY-0003Rc-4d; Sat, 10 Jul 2004 10:41:10 -0700 Date: Sat, 10 Jul 2004 10:41:10 -0700 From: Saint Aardvark the Carpeted In-reply-to: <40F026E2.8000000@uiowa.edu> Sender: aardvark To: Jason Dusek Message-id: <20040710174109.GB7692@hardesty.saintaardvarkthecarpeted.com> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline User-Agent: Mutt/1.5.6+20040523i References: <40F026E2.8000000@uiowa.edu> cc: questions@freebsd.org Subject: Re: Can't Mount Optical Drive 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: Sat, 10 Jul 2004 17:50:21 -0000 Jason Dusek disturbed my sleep to write: > 5 # mount /dev/acd0 /cdrom > mount: /dev/acd0: Input/output error You may want to try: mount -t cd9660 /dev/acd0c /cdrom or its equivalent: mount_cd9660 /dev/acd0c /cdrom Also, if you're trying to mount a DVD instead of a CD, you may need to try: mount_cd9660 /dev/cd0c /cdrom > I have some another disk mounting question, too. Sometimes when I try to > mount the CD drive I get an error that goes something like: > > Incorrect super block > > What does this error mean? What does it mean in reference to a hard > drive? What does it mean in reference to a CD drive? The superblock is a chunk of disk that has housekeeping information like the amount of free space, where to find free inodes, and so on. The error can mean pretty much the same things no matter what the medium. It might mean that you've specified the wrong filesystem -- "mount" (which defaults to FreeBSD's UFS filesystem) instead of "mount -t cd9660", say. It might also mean that the the filesystem hasn't been formatted yet, or (if a CD) that you've burned a coaster. Or, it might mean that you are about to be very grateful for your carefully-followed backup plan. :-) -- Saint Aardvark the Carpeted aardvark@saintaardvarkthecarpeted.com Because the plural of Anecdote is Myth.