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Re: Dual layer DVD

Steve McIntyre wrote:

On Wed, Sep 08, 2004 at 08:28:23PM +0000, Joel Baker wrote:
On Wed, Sep 08, 2004 at 12:25:29AM +0100, Steve McIntyre wrote:
Jigdo means that we can do this without eating terabytes of disk space
all over the world. To get the DL DVD images pressed will probably
take extra preparation work - see my new dvdtape package for details.
This is more or less what I had in mind, other than some vague notion of
being able to auto-generate the 8.5 image from the pair of 4.7 images;
of course, jigdo might make that simple (no need to re-fetch most of the
pieces, only to fetch the filesystem layout bits and re-assemble them in
the correct combination - if it's that smart).

Yes, it should be quite easy to grab all the bits you need from the 2
smaller ISOs to make the large one, with just the filesystem headers
and directory structure changing. I'm actually working on a script to
make that easier right now...

Could such a script not be shipped on the first of two small dvd images, so only the 2 ISOs had to be made public. If anyone wants one dual-layer image, he could simply merge them using the script without downloading the big image.

Even all iso images could contain scripts to convert them eighter to CD or to DVD images, which would help saving disc space and a litte bit of net traffic.


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