David Koski put forth on 12/1/2009 10:45 PM:

> For example, doing a distribution upgrade 
> has rendered a system unbootable and made me boot from CD to fix it.  I have 
> never had a problem upgrading Debian.  I have even upgraded several remotely 
> without a problem.  Try upgrading RH 3 to 4 to 5 remotely or otherwise.  I 
> don't know anyone who has worked with both Debian and RPM based distros 
> enough to get good at them and chose to run RH or Centos.

I've in-place upgraded a couple of systems over the years from Woody all
the way to Lenny (3 distribution upgrades) without any serious issues,
including compiling and installing new custom kernels along the way (I
do _only_ custom kernels).  Sticking with LILO instead of trying to
replace it with grub probably avoided many potential problems.  Sticking
with non initrd custom kernels allows me to keep using LILO.  I hope I
can use LILO forever.  Probably wishful thinking. :)

BTW, don't you really mean?

# apt-get purge exim
# apt-get install postfix

;)

--
Stan

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