Re: efibootmgr: Cannot translate unix loader path xxx\xxx\xxx to UEFI: No error: 0

On Thu, 27 Dec 2018 08:38:20 -0700
Warner Losh <imp_at_bsdimp.com> wrote:

> On Dec 27, 2018 7:42 AM, "O. Hartmann" <ohartmann_at_walstatt.org> wrote:
> 
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> Am Thu, 27 Dec 2018 13:29:44 +0100
> "Hartmann, O." <ohartmann_at_walstatt.org> schrieb:
> 
> 
> > Updated Fujitsu Celsius M740 to its lates UEFI firmware today.
> > After this update, the box won't boot FreeBSD 12-STABLE anymore! With
> > disabled CSM, the firmware doesn't recognise the boot SSD's freebsd-efi
> > partition for UEFI boot anymore - which was no problem before.
> >
> > When trying FreeBSD 13-CURRENT (USB image from 26.12.2018 as of the
> > snapshot site) I receive a malloc arena error when trying to set boot
> > vars via efibootmgr utility. So I tried the recent 12-STABLE snapshot
> > as of 26th December 2018, the same as CURRENT USB Image, and I receive
> > a weird error:
> >
> > efibootmgr -c -l /mnt/EFI/BOOT/BOOTX64.EFI -L FreeBSD
> >
> > efibootmgr: Cannot translate unix loader path
> > '\mnt\EFI\BOOT\BOOTX64.EFI' to UEFI: No error: 0
> >
> > What the heck is that?
> >
> > What does this error mean? No error: 0?
> >
> > The box is unusable.
> >
> >
> > Kind regards,
> >
> > O. Hartmann
> >
> >
> >  
> 
> I found this PR, Bug 229191, from June, 2018:
> 
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229191
> 
> It seems the problem has not been fixed. Indeed did I mount the ESP
> via a GEOM label, /dev/gpt/efiboot0.
> 
> 
> There is some code that tries to cope, but I ran out of time before it was
> bulletproof.  You can use nda0p9:/path/in/fs instead. Assuming the esp is
> on /dev/nda0p9.
> 
> Warner
[...]

The workaround (alternative mounting) given in the mentioned PR solved the
problem.

This is the second time I face crude problems with Fujitsu hardware/firmware
and if I wouldn't solved a similar problem this summer for an Esprimo Q956, the
problem would have cost me valuable time. So, my thinking is: couldn't there be
a short paragraph in the handbook?

Regards,

o.h.