Date: Tue, 29 Dec 2020 14:40:17 +0700 From: Victor Sudakov <vas@sibptus.ru> To: Dave Hayes <dave@jetcafe.org> Cc: Rick Miller <vrwmiller@gmail.com>, 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: <20201229074017.GA9211@admin.sibptus.ru> In-Reply-To: <20201228225756.30870717@bigus.dream-tech.com> References: <20201224134403.GB13527@admin.sibptus.ru> <a24b96bd-a446-383d-11b7-601b5b96539a@gmail.com> <CAHzLAVE_1TQYWju=Hy8sCY3=GbE1NSSEr2VGRLE30PKd7Cafaw@mail.gmail.com> <20201225084305.GA60871@admin.sibptus.ru> <CAHzLAVFCKfkxwDg-b25OyQ8Zst4Y__f6g5j7uXJGqtCkbw2Dvw@mail.gmail.com> <20201228152202.4ba4fec9@bigus.dream-tech.com> <20201229022714.GA95031@admin.sibptus.ru> <20201228191306.3edcdab1@bigus.dream-tech.com> <20201229034211.GA98610@admin.sibptus.ru> <20201228225756.30870717@bigus.dream-tech.com>
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[-- Attachment #1 --] Dave Hayes wrote: > > > > Was this happening over network (PXE boot) or from a physical medium > > > > like USB drive/CD-ROM ? > > > > > > Actually both. However, this thread implied that the mfsBSD/ramdisk > > > techniques did not work, and I wanted to provide a datapoint to the > > > contrary. > > > > > > We have one installation which gets the ISO image over FTP and boots from > > > that, > > > > Can you please elaborate on that? Is this installation using UEFI or > > legacy mode loader? What tools are used? pxelinux/memdisk or anything else? > > This particular installation is a Dell DRAC that has the capability of booting > given an http url for a bootable iso. There actually is still some problem > booting the hybrid disk in BIOS mode, but UEFI works just fine. Highly > effective on an isolated network. Ah, is this more like IPMI booting, where you can attach an ISO image to the IPMI console which has its own networking stack, management interface etc? > > I don't think this is quite what you are after, though I could be mistaken. > I did try the PXEBOOT idea on the exact same hardware platform and > was unable to get it to work, back at FreeBSD 10->11. I have pxelinux+pxeboot+mfsBSD working fine, but with legacy BIOS. > Do you know of any technical reading that can get one up to speed on the low > level details of UEFI booting and how it is different from BIOS? One problem in > debugging all these methods is the ever-present lack of documentation. :/ No, I don't. My knowledge of the thing is very rudimentary. I know that the UEFI "BIOS" looks for the "efi" type partition in the GPT, or for the EF partition in the MBR, finds a EFI executable under some special path like /EFI/BOOT/BOOTX64.EFI, and this EFI executable is supposed to know how to load the main OS. Therefore my cheat sheet for making a UEFI bootable freebsd UFS volume is like this: gpart create -s gpt ada1 # will become ada0 gpart add -s200M -t efi ada1 gpart add -s2G -t freebsd-swap ada1 gpart add -t freebsd-ufs ada1 gpart bootcode -p /boot/boot1.efifat -i 1 ada1 Instead of "gpart bootcode -p /boot/boot1.efifat -i 1 ada1" we can just as well run "newfs_msdos /dev/ada1p1 ; mount_msdosfs /dev/ada1p1 /mnt ; rsync -r ... /mnt" -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN 2:5005/49@fidonet http://vas.tomsk.ru/ [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- iQEcBAEBAgAGBQJf6t1hAAoJEA2k8lmbXsY0uBIH/3moH1hCENw4qb1TLFCnx3ZT rpWypI+ilpn133h5vVzKmAo6zYSeDIMxoYlQRYSSKyt5lJAi6mLD6jH/nFmhvuOG MkzvEpLzefHb0i1/cyQg/M0Uga4xgEGH0F8ciLQaPNijwsHY8rPgJ+BaXaqZDhcS FkDPERFkkhL9mVBalOZtXWdazZWH8sitzFDbQI4/BcQa54z8Via0y4mA1ws92Rg/ VUcNteEIKSE6uyL9x+KAx6p+rMFQJ/Bc6g+gNiN2Coq4EI4Orz++iXsDlqftXJ6a A7txjC3wW3i8yLO5M++vWRN59knaMq5loGhcS1U6F15ISSd6nJEaQq65Gw2rdEA= =gBE7 -----END PGP SIGNATURE-----help
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