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Date:      Sat, 30 May 2015 18:53:08 -0700
From:      Garrett Cooper <yaneurabeya@gmail.com>
To:        Erich Dollansky <erichsfreebsdlist@alogt.com>
Cc:        Aryeh Friedman <aryeh.friedman@gmail.com>, FreeBSD Current <freebsd-current@freebsd.org>
Subject:   Re: how do I downgrade from 11-current to 10-stable
Message-ID:  <0E0C977D-2D1B-4CFD-BCDF-CBC202D88078@gmail.com>
In-Reply-To: <20150531094127.2950a5ef@X220.alogt.com>
References:  <CAGBxaXkTE7FB0Pu-9r6PXpKpB579T6UwGwYoNEYX9650UTFwKQ@mail.gmail.com> <20150531094127.2950a5ef@X220.alogt.com>

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On May 30, 2015, at 18:41, Erich Dollansky <erichsfreebsdlist@alogt.com> =
wrote:

> Hi,
>=20
> On Sat, 30 May 2015 05:52:56 -0400
> Aryeh Friedman <aryeh.friedman@gmail.com> wrote:
>=20
>> My desktop machine is 11-current and I want to down grade it to
>> 10-stable how do I do this without needing a reinstall?
>>=20
>=20
> I did this several times from sources. Be aware of one problem which
> could be fatal. If you created a encrypted partition with GELI and you
> downgrade, the older version might not be able to handle the =
encryption
> of the newer version. This is not mentioned in the documentation.
>=20
> There might be also a catch with the mix of kernel/world. To avoid
> problems there, I ran both the installation of kernel and the world in
> one go.

Anything that modifies on-disk metadata is a no-go for downgrades, which =
includes UFS and ZFS as well=85
Cheers,
-NGie

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