Re: is gptzfsboot relevant on arm64?

Reply: f451 : "Re: is gptzfsboot relevant on arm64?"
In reply to: f451 : "is gptzfsboot relevant on arm64?"
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From: Warner Losh <imp_at_bsdimp.com>
Date: Wed, 04 May 2022 13:21:53 UTC

On Wed, May 4, 2022 at 7:13 AM f451 <f451@imap.cc> wrote:

> Hello,
>
> On arm64 I have this:-
>
> % uname -KU
> 1400057 1400057
> % man 8 gptzfsboot
> No manual entry for gptzfsboot
> %
>
> Is gptzfsboot only for certain archs? I only query it because recently
> zpool offered an
> upgrade and suggested looking at it. I see that man 8 gptzfsboot is
> available on
> 13-stable on amd64.
>

No. It's not relevant for ARM 64. It's only relevant for BIOS systems,
which are exclusive i386/amd64.
ARM64 uses UEFI exclusively for booting, and has a combined boot loader for
both ZFS and UFS
systems (gptzfsboot exists because of space limitations on x86 and the
kinda funky way that ZFS
reserves space for a boot loader).

Warner