Takashi,

Using anaconda to upgrades should always be better than using yum or 
apt.  This is because anaconda had code specifically to handle upgrades. 
 Yum and apt rely on the individual rpms to do it correct.  Sometimes 
the individual rpms do not have enough code to handle the upgrade.  A 
example of this is that with SL 4.0 /dev is created on the fly.  On SL 
3.0.x /dev is created with a rpm.  If yum were to upgrade this it would 
leave the old dev rpm and this could clearly make the new /dev confused.

-Connie Sieh
On 
Fri, 22 Apr 2005, Takashi Ichihara wrote:

>   Hi
> 
>   This is great new. Thanks to your work and all the testers.
>   By the way, is it possible to upgrade from Scientific Linux 4.0 RC2 
> (SL40.40.040505.x86_64) to Scientific Linux 4.0 using anaconda with
> iso CD ?  (Some modules will be replaced. But is this sufficient ?)
> Thanks for the information.
> 
>   Takashi Ichihara
> 
> > scientific linux users,
> > 
> > Scientific Linux 4.0 for x86_64 is now available.  Included here are the 
> > full SL.releasenote.  Please read it.
> > 
> > I have also included the upstream vendor Release Notes.
> > 
> > Thanks to all the testers who helped to make this a better release.
> > 
> > Go forth and compute.
> > 
> > -Connie Sieh
> > -Troy Dawson
> > 
> > --------------------------------------------------------------------------
> > Scientific Linux 	4.x for x86_64     		April 2r10, 2005
> > 
> > It may be possible to upgrade to this release from Scientific Linux 3.0.4 
> > x86_64 if the anaconda installer is used.  Yum is known to NOT work.
> > 
> > See SL.documentation for the vendor release notes.
> > 
> > See comments/issues/test reports to [log in to unmask]
> > --------------------------------------------------------------------------
> 
> 
> 
> 
> 
>