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Date:      Mon, 30 Dec 2024 08:55:49 +0000
From:      Graham Perrin <grahamperrin@gmail.com>
To:        questions@freebsd.org, FreeBSD Documentation Project <freebsd-doc@freebsd.org>
Subject:   boot loaders: gpart confusion (was: cannot boot: ZFS: unsupported feature" com.klarasystems:vdev_zaps_v2)
Message-ID:  <e5c8fa4f-a112-4253-a0da-0bbfee80d8b7@gmail.com>
In-Reply-To: <867c87bh17.fsf@ltc.des.dev>
References:  <378879736.3447641.1733839072974@kpc.webmail.kpnmail.nl> <867c87bh17.fsf@ltc.des.dev>

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April 2021, <https://www.freebsd.org/releases/13.0R/>; release notes:

> … To update old ESP partitions, users should stop using the gpart(8) 
> utility. …
>

On 10/12/2024 17:10, Dag-Erling Smørgrav wrote:
> … upgrade your boot loader as described in the gpart manual page or the ZFS chapter of the FreeBSD handbook:
>
>    https://docs.freebsd.org/en/books/handbook/book/#zfs-zpool-upgrade

The Handbook may be a source of confusion.

In the ZFS chapter, the warning under 
<https://docs.freebsd.org/en/books/handbook/zfs/#zfs-zpool-upgrade>; states:

> For systems using EFI to boot, execute the following command:
>
> # gpart bootcode -p /boot/boot1.efifat -i 1 ada1


<https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261212>; (January 2022):

> 261212 – Update the ZFS chapter of the FreeBSD Handbook, and other 
> OpenZFS-related pages


Another possible source of confusion: for gpart(8), are the examples at 
<https://man.freebsd.org/cgi/man.cgi?query=gpart&sektion=8&manpath=FreeBSD+14.2-RELEASE#EXAMPLES>; 
outdated?

Compare with 
<https://man.freebsd.org/cgi/man.cgi?query=gpart&sektion=8&manpath=FreeBSD+14.2-RELEASE#EXAMPLES>; 
for loader.efi(8).



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