Re: Jigdo instructions, please

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On Tue, 2008-02-19 at 03:30 -0500, Robert P. J. Day wrote:
> On Tue, 19 Feb 2008, Kevin J. Cummings wrote:
> 
> > Robert P. J. Day wrote:
> > > On Mon, 18 Feb 2008, Kevin J. Cummings wrote:
> > >
> > >> Timothy Murphy wrote:
> > >
> > >>> I have heard of "mount -o loop". But the instructions say one
> > >>> should insert a DVD, which I take to mean that one should insert a
> > >>> DVD.
> > >> They ask you to insert a DVD so that its filesystem can be mounted
> > >> and you can access the files on that DVD.
> > >>
> > >>> This is not always - or even usually - equivalent to "mount -o loop".
> > >> huh?  Its almost always the same.  Unless you are using the DVD for
> > >> something non-standard.  (years ago I used to write .tar files
> > >> directly to floppy media.  I suppose you could arrange to use a DVD
> > >> in the same fashion, but most people don't.)  Most DVDs contain ISO
> > >> (or UDP) filesystems (which for the sake of this argument are
> > >> equivalent).
> > >
> > > i would disagree.  with a physical DVD, you're mounting a block
> > > device, while you'd mount with "-o loop" if you're mounting a regular
> > > file that happens to be an ISO image.  let's not confuse the two.
> >
> > I'm not confusing the two.  With a DVD, the ISO is burned to the
> > disk. You could always recover it via "cat /dev/dvd > image.iso" (or
> > something similar for your device name).  Both are ultimately an ISO
> > image.  Only the container (and as you said the actual mount
> > options) differ.  I guess you like to split hairs.
> 
> heh.  what part of "pedantry" is confusing you?  :-)
> 
> rday
Thanks, Robert,
	This gave me a real chuckle.

Regards,
Les H

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