Downgrade FreeBSD 5.1 or 5.2 -> 4.9

sebastian ssmoller sebastian.ssmoller at
Thu Jan 22 11:32:10 PST 2004

have a look at this thread


On Thu, 2004-01-22 at 18:19, Garance A Drosihn wrote:
> At 9:01 AM +0100 1/22/04, Sessler, Enrico wrote:
> >Hello,
> >
> >is there a way to downgrade from FreeBSD 5.1-RELEASE
> >or 5.2-CURRENT to the latest 4.x version?
> This would be very hard for us to support, and I expect you
> will have a lot of trouble trying to do an "in place"
> downgrade to 4.x.  You will have much less trouble if you
> just resign yourself to backing-up the data you need to some
> safe place, and do a fresh install (ie, reformat the drives
> using the 4.9 installation discs, and install everything from
> scratch).
> I realize that is a lot of work.  However, I am pretty sure
> that will be less work than trying to do a "simple downgrade".
> >Note: I have no console access to the machines only
> >telnet/rlogin. Thus using a boot floppy/CD is not possible.
> This makes it even less likely that you will be successful
> doing a downgrade to 4.9.

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