How to cross-upgrade Fedora x86(32-bit) => x86_64(64-bit) using 'preupgrade'

[Mat Booth]

On Wed, Apr 22, 2009 at 5:41 AM, Gerry Reno <greno at verizon.net> wrote:
> For the past couple months I've been working on finding a way to
> successfully upgrade Fedora x86(32-bit) to x86_64(64-bit).  I had almost
> given up because nothing seemed to work despite dozens of different
> approaches.  Then a couple days ago I started a new set of experiments and
> now I have successfully cross-upgraded three different systems using this
> technique.  On the three machines that I used, all the configs that I set up
> were still in place after the upgrade.  The machines behaved normally and I
> have not found any sign of problems yet.  But, it would be difficult to see
> how this technique could ever be fully automated because it requires a
> certain amount of manual inspection in a number of places.  And it's
> probably something that could not be officially supported.  But at least it
> appears there may now be a technique to perform a successful 32-bit =>
> 64-bit upgrade.  And for those who have heavily configured machines this may
> be worth a try.  Anyway, here's the technique:
>

You sir, are a hero. I wanted to do exactly this once F11 is released
and was disappointed to learn it wasn't possible in an earlier thread
on this list (that I can't immediately find the link to).

I think I will give this a try (won't be until next month, though).
Worst case scenario is I just blat it away and reinstall from scratch,
which is what I was planning anyway.

-- 
Mat Booth
www.matbooth.co.uk