Re: HELP: UEFI/ZFS Boot failure: Ignoring Boot000A: Only one DP found

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Am Wed, 21 Aug 2019 22:34:21 +0300
Toomas Soome <tsoome_at_me.com> schrieb:

> > On 21 Aug 2019, at 22:30, O. Hartmann <ohartmann_at_walstatt.org> wrote:
> > 
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> > Am Wed, 21 Aug 2019 22:14:46 +0300
> > Toomas Soome <tsoome_at_me.com <mailto:tsoome_at_me.com>> schrieb:
> >   
> >> If you drop into efi shell, can you start efi/boot/bootx64.efi manually? you should have
> >> fs0: or like for ESP.
> >> 
> >> rgds,
> >> toomas  
> > 
> > Hello,
> > 
> > I can't even stop to gain access to the shell; there is no timeframe to hit any key to
> > stop by and access the efi shell. 
> > 
> > Kind regards,
> > oh  
> 
> 
> hm? efi shell should be available from boot device menu, so you mean, you can not even get
> into firmware setup?
> 
> rgds,
> toomas
> 
> >   
> >>   
> >>> On 21 Aug 2019, at 20:58, O. Hartmann <ohartmann_at_walstatt.org> wrote:
> >>> 
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> >>> I ran into serious trouble booting several boxes off UEFI. On modern hardware,
> >>> the ESP is around 200 - 300 MB in size and usually I install
> >>> /efi/freebsd/loader.efi, loader.efi taken from /boot/loader.efi. On some older
> >>> hardware, specifically on a Lenovo E540 with latest available firmware (2.28),
> >>> which uses 12-STABLE and a ZFS-only installation, there seems no working loader
> >>> anymore!
> >>> The installation of the Laptop has been performed using 12.0-PRERELEASE on an
> >>> Samsung EVO 860 500GB SSD. The ESP is 200M in size and contained
> >>> /efi/boot/BOOTx64.efi and /efi/boot/startup.nsh.
> >>> 
> >>> The ESP has been destroyed by accident. Now I tried to solve the problem by
> >>> installing a new ESP and the proper loader, assuming that /boot/loader.efi
> >>> (taken from a FreeBSD-13-CURRENT or from 12-STABLE of the same revision and
> >>> sompiled on the same platform (Intel Haswell) as the lost laptop's revison of
> >>> the OS is at. But I fail doing so. Somehow Lenovo's firmware is setting up a
> >>> lot of UEFI boot numbers as provided via "efibootmgr -b 000X", X some Hex
> >>> numer. -b 000A is usually denoted/labeld with "ATA HDD0".
> >>> 
> >>> Installing the proper boot/loader.efi loader file from 12-STABLE (r351108) and
> >>> setting the EFI variable according the following steps:
> >>> 
> >>> mount -t msdosfs /dev/ada0p1 /mnt (ESP is on GPT partition 1, 0p2 is zroot)
> >>> Install then loader.efi either as BOOTx64.efi or loader.efi under
> >>> /mnt/efi/boot/ or /mnt/efi/freebsd/ and then set the boot environment
> >>> accordingly via
> >>> 
> >>> delete 000A first:
> >>> efibootmgr -B -b 000A
> >>> 
> >>> create the new efi boot var:
> >>> efibootmgr -a -b 000A -c -l /mnt/efi/{freebsd|boot}/{loader.efi|BOOTx64.efi} -L
> >>> FreeBSD
> >>> 
> >>> The result is a non booting system, the Lenovo firmware jumps immediately into
> >>> the menu for selecting a proper boot media.
> >>> 
> >>> The same happens with /boot/boot1.efi installed as loader.efi or BOOTx64.efi
> >>> shown above.
> >>> 
> >>> In case I just brute-force flash the ESP with /boot/boot1.efifat, dd
> >>> if=boot1.efifat of=/dev/ada0p1 (ESP) (taken from the propper 12-STABLE system I
> >>> spoeke of above), then booting fails again, but this time with an error I watch
> >>> on so many boxes recently:
> >>> 
> >>> [...]
> >>> Ignoring Boot000a: Only one DP found
> >>> Trying ZFS pool
> >>> Setting currdev to zfs:zroot/ROOT/default:
> >>> 
> >>> Then the console freezes at that point and only RESET or POWER OFF is capable
> >>> of a revive.
> >>> 
> >>> What is wrong here? What am I missing?
> >>> 
> >>> Thanks in advance,
> >>> 
[...]

What does the message:

Only one DP found

mean? Obviously, "Trying ZFS pool - Setting currdev to zfs"zroot/ROOT/default:" indicates that
the loader has already found its partition to bbot from, but why is it freezing/crashing then?
No Ctrl-Alt-Del helps, only hard reset or power cycle brings the box back.

oh
- -- 
O. Hartmann

Ich widerspreche der Nutzung oder Übermittlung meiner Daten für
Werbezwecke oder für die Markt- oder Meinungsforschung (§ 28 Abs. 4 BDSG).
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