Re: Physically have install DVD set. Want ISO's from which they came.

[Richard Owlett <rowlett@cloud85.net>]

David wrote:
> On 21 February 2014 23:32, Richard Owlett <rowlett@cloud85.net> wrote:
> > I have *NO* internet connectivity.
> > I have Squeeze installed.
> > I have complete DVD install set.
> >
> > I want to re-create the ISO files from which they came.
>
> A month ago (http://lists.debian.org/52E270FB.7070006@cloud85.net)
> in another thread we already discussed this as follows:

Things have changed slightly:
  then I was focused on attempting to understand loop devices.
  I have learned more in the meantime leading to suspect the 
understanding loop
  devices wasn't as related to solving my underlying problem as 
I had thought.

> On 25 January 2014 00:56, Richard Owlett <rowlett@cloud85.net> wrote:
> > David wrote:
> > > Ordinarily, an iso file is used to prepare a filesystem image that is
> > > then burnt to a dvd. But you want to go in the opposite direction.
> > > Somehow you need to read the entire dvd image into an iso file. And
> > > this is not necessarily simple, see for example:
> > >
> > > http://www.troubleshooters.com/linux/coasterless.htm#_Accurately_Reading_a_CD
> > > Years ago I have done this successfully with CDs. I don't know if it
> > > applies to DVDs.
> >
> >  From an initial reading, I don't see why it would not apply to a DVD.
> > Careful reread and experimentation to follow.
> >
> > > See also:
> > > http://www.debian.org/doc/manuals/debian-reference/ch10
> > > Section 10.3 and especially 10.3.6 following "you can ... make the
> > > ISO9660 image directly from the CD-ROM device as follows"
> >
> > I've found other portions of that work valuable in the past. Thanks for
> > reminding me of it. Chapters 9 and 10 should keep me occupied. "10.3.8.
> > Mounting the ISO9660 image file" implies an answer to my question.
>
> Sometime between then and now, it seems that the debian-reference has
> been edited and that information has entirely disappeared from the current
> version, and so the above debian.org link is now broken. Perhaps if you have
> the squeeze version, it will still contain the relevant information.

The Wayback Machine comes to the rescue here. A link to older 
version is
http://web.archive.org/web/20131224033423/http://www.debian.org/doc/manuals/debian-reference/ch10

> The first link I provided is still valid, and provides instructions
> how to create an
> iso file from cd media. Did you try this? What happens when you follow
> those instructions?

I made one attempt but dd effectively ignored me. A reply in this 
thread and a reread of your first link suggests a typo. Will try 
again this afternoon.

Thanks again.