Polytropon freebsd at edvax.de
Thu Jun 3 20:27:35 UTC 2010

Re-including the list...

On Thu, 3 Jun 2010 20:14:03 +0000 (GMT), Andy Hiscock <andyjhiscock at yahoo.com> wrote:
> Right how can I uninstall back to 7.2?

Well... I have to admit that I've never done that. Basically,
it should be possible if you install the sources of 7.2 (e. g.
from the CD) to overwrite /usr/src. Then you basically do what
the Handbook says about upgrading from source, or, to quote
from /usr/src/Makefile (worth reading its beginning):

#  1.  `cd /usr/src'       (or to the directory containing your source tree).
#  2.  `make buildworld'
#  3.  `make buildkernel KERNCONF=YOUR_KERNEL_HERE'     (default is GENERIC).
#  4.  `make installkernel KERNCONF=YOUR_KERNEL_HERE'   (default is GENERIC).
#       [steps 3. & 4. can be combined by using the "kernel" target]
#  5.  `reboot'        (in single user mode: boot -s from the loader prompt).
#  6.  `mergemaster -p'
#  7.  `make installworld'
#  8.  `make delete-old'
#  9.  `mergemaster'                         (you may wish to use -U or -ai).
# 10.  `reboot'
# 11.  `make delete-old-libs' (in case no 3rd party program uses them anymore)

This should then give you the 7.2 version of FreeBSD back - removing
everything that freebsd-update might have updated.

I am not sure if you can use freebsd-update for this task (but I
don't see why it should not be possible); in this case, refer to
"man freebsd-update", especially the -r parameter (new release).

Maybe a third possibility is to install FreeBSD 7.2 from the
CD (I just assume you installed from CD or have the CD there),
without any formatting, just overwriting. But this may be
problematic - MAY, I'm not sure.

Sorry, I'm really lacking experience in downgrading a system, as
I have never done this, so I sadly can't be more specific. Maybe
somebody on-list can be more precise (that's why I took the freedom
to re-include the list, hope that's okay).

Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...

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