effect of xz compression change on deltaiso users

Richard Shaw hobbes1069 at gmail.com
Mon Feb 14 14:13:44 UTC 2011

On Mon, Feb 14, 2011 at 8:08 AM, Andre Robatino
<robatino at fedoraproject.org> wrote:
> As of Fedora 15, xz compression has changed - see
> http://lists.fedoraproject.org/pipermail/devel/2010-October/144651.html
> Versions of Fedora <= 14 continue to use the old compression, but
> everything after that (including Rawhide and the current Branched 15)
> will use the new compression. To use applydeltaiso successfully on a
> diso which goes from oldiso to newiso, the system must be using the
> compression corresponding to newiso. For example, a diso for 13->14
> requires the old compression, but a diso for 14->15 will require the new
> compression. This means that it won't be possible to just use a 14->15
> diso, or any of the disos for F15 development, on a standard F14 system.
> It can be done on a F15 or Rawhide system, of course, but this is a
> Catch-22 for people who want to install F15 from the DVD. It's possible
> to temporarily modify a F14 system to use the new compression. First,

I assume if I can get a F15 TC virtual machine installed and working
that I could just use the VM to apply the diso's?


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