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
--
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Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry:
Have classroom, will lecture.
http://crashcourse.ca Waterloo, Ontario, CANADA
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