Date: 04 Nov 2004 17:11:10 -0500 From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org> To: Murray Taylor <murraytaylor@bytecraftsystems.com> Cc: freebsd-questions@freebsd.org Subject: Re: question: how do I burn a UFS filesystem onto a CDROM Message-ID: <44ekj99se9.fsf@be-well.ilk.org> In-Reply-To: <1099458220.64462.9.camel@wstaylorm.dand06.au.bytecraft.au.com> References: <1099458220.64462.9.camel@wstaylorm.dand06.au.bytecraft.au.com>
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Murray Taylor <murraytaylor@bytecraftsystems.com> writes: > I wish to burn a CDROM that I can mount and show > people that "yes there really is readable data on it" > BUT I dont want it to be readable in a windows host. > > So I am thinking that instead of the usual mkisofs routine that > makes a cd9660 filestructure I would just burn a CDROM with > the data in a UFS structure... > > NB the actual cd burner is in a winblows laptop so I am > also thinking that I need to create an .iso image somehow > that I can burn in one pass on the burner pc, even though the > disk will not be accessible to that host once burnt. > > The question is : how ? > > I'm guessing that a way may be to create a vnode file system, > copy the data to it and then somehow make it into a burnable > disk image, but thats where the guessing runs out..... That's just about right. The trick is that if you use a file-backed vn(4) device to build your UFS disk image, the backing file *is* the image that you want to burn to cdrom. [It's not an ISO file -- by definition, "ISO" files are ISO9660 format.] I was meaning to try it to give an exact recipe, but I haven't gotten around to it yet.
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