Downgrade FreeBSD 5.1 or 5.2 -> 4.9

Ruslan Ermilov ru at
Thu Jan 22 00:49:51 PST 2004

On Thu, Jan 22, 2004 at 09:01:58AM +0100, 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?
> Have tried via "sysinstall" and "Upgrade" but it always
> complaints that there is no "base" section found when
> I set in Options "4.9-RELEASE".
> Note: I have no console access to the machines only
> telnet/rlogin. Thus using a boot floppy/CD is not possible.
For a binary downgrade, I assume you'd need a sysinstall(8)
from 4.9-RELEASE, and the compat4x distribution from 5.x.

Ruslan Ermilov
FreeBSD committer
ru at
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