From owner-freebsd-questions@FreeBSD.ORG Tue Jan 27 12:41:36 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 3ACC616A4CE for ; Tue, 27 Jan 2004 12:41:36 -0800 (PST) Received: from lilzmailso01.liwest.at (lilzmailso01.liwest.at [212.33.55.23]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3E79543D70 for ; Tue, 27 Jan 2004 12:41:13 -0800 (PST) (envelope-from dgw@liwest.at) Received: from cm58-27.liwest.at ([212.33.58.27]) by lilzmailso01.liwest.at with esmtp (Exim 4.24) id 1AlZzb-00028P-AK; Tue, 27 Jan 2004 21:39:27 +0100 From: Daniela To: Lowell Gilbert Date: Tue, 27 Jan 2004 21:39:06 +0000 User-Agent: KMail/1.5.3 References: <200401252213.09805.dgw@liwest.at> <44d695ihti.fsf@be-well.ilk.org> In-Reply-To: <44d695ihti.fsf@be-well.ilk.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200401272139.06176.dgw@liwest.at> cc: questions@freebsd.org Subject: Re: Mounting ISO r/w 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: Tue, 27 Jan 2004 20:41:36 -0000 On Tuesday 27 January 2004 14:31, Lowell Gilbert wrote: > Daniela writes: > > I need information how to either mount an ISO image r/w or find out what > > options I must give to mkisofs to recreate it. > > I have to add and remove some files from the tree, but all other things > > should stay as they are. I tried vnconfig, but I can't get that thing to > > mount r/w. > > ISO9660 isn't intended to be a fully read-write format. > > You can replace files with later versions by adding them to the end of > a multi-session image, but that doesn't actually remove the original > from the earlier session. > > Occasionally I will do things like this by copying the files out of > the image, modifying the filesystem, and writing them back to a new > image, but that technique doesn't automatically give me the same set > of options on the 9660 filesystem. Typically, I don't care -- I want > to use a specific new set of options anyway -- but it's not quite what > you asked for. Sounds good, but the problems are that the ISO is bootable and it violates the ISO9660 standard in numerous ways. I have trouble figuring out how much standard-compliance I can turn off while still producing a readable CD-ROM. > In theory, it would be possible to do this, but it would be very > inefficient. It would require making a new ISO image with every > modification. > > Good luck.