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Date:      Fri, 25 Dec 2020 08:58:56 -0500
From:      Rick Miller <vrwmiller@gmail.com>
To:        Victor Sudakov <vas@sibptus.ru>
Cc:        Graham Perrin <grahamperrin@gmail.com>,  FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: EFI, UEFI, PXE: FreeBSD-12.1-RELEASE-amd64-bootonly.iso boot from SAN device failed, error 0x7f22208e
Message-ID:  <CAHzLAVFCKfkxwDg-b25OyQ8Zst4Y__f6g5j7uXJGqtCkbw2Dvw@mail.gmail.com>
In-Reply-To: <20201225084305.GA60871@admin.sibptus.ru>
References:  <20201223025406.GA25600@admin.sibptus.ru> <af710389-3e9a-6f0d-98e4-d69aab875fed@gmail.com> <20201223104459.GA36737@admin.sibptus.ru> <6cbaa416-0262-c85f-8e74-19a8ac95605d@gmail.com> <20201224134403.GB13527@admin.sibptus.ru> <a24b96bd-a446-383d-11b7-601b5b96539a@gmail.com> <CAHzLAVE_1TQYWju=Hy8sCY3=GbE1NSSEr2VGRLE30PKd7Cafaw@mail.gmail.com> <20201225084305.GA60871@admin.sibptus.ru>

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On Fri, Dec 25, 2020 at 3:43 AM Victor Sudakov <vas@sibptus.ru> wrote:

> Rick Miller wrote:
> >
> > This is seemingly reminiscent of a problem I've observed with bootonly
> ISOs
> > from FreeBSD 9 through 12, which is documented in FreeBSD PRs 239876,
> > 227808, 199197, 179312, and 169919. See comment 22 in PR 227808 for a
> > description of how it might be overcome.
>
> Interesting. The way I'm trying to boot is well described in
> Comment 20. It is sad that nothing has changed since July 2018. Does it
> mean nobody really cares?
>
> Speaking of Comment 22.
>
> I've never thought I will have to build a kernel with an MFS image
> within (outside of NanoBSD). How are you going to boot this kernel from
> iPXE? Put it on an ISO image and sanboot the ISO?
>

Yes. That is precisely how it is accomplished.

Is it not possible to fetch a GENERIC kernel by loader.efi, then fetch
> an MFSROOT image as a separate file? This is the way I did the job
> during the pxelinux (old BIOS based netboot) times.
>

It seems you refer to loading a kernel and separate ramdisk or initrd. I've
heard it rumored there could be preliminary experimental code to accomplish
this, but don't have any evidence.

-- 
Take care
Rick Miller



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