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From: "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de>
To: Thomas Danckaert <post@thomasdanckaert.be>
Cc: help-guix@gnu.org
Subject: Re: repair broken boot record
Date: Fri, 1 Oct 2021 08:53:44 +0200	[thread overview]
Message-ID: <20211001065344.3ofpdgnxusvgj4ac@pelzflorian.localdomain> (raw)
In-Reply-To: <0dd640415db388dd78cfbd1e8174ea65@thomasdanckaert.be>

On Thu, Sep 30, 2021 at 09:43:18AM +0200, Thomas Danckaert wrote:
> Hello guix-help,
> 
> my system does not boot anymore after a guix pull and system reconfigure
> (which did show a warning, see below).  It does not even enter the GRUB
> stage, I get a "Reboot and Select proper Boot device" instead.  I think the
> MBR might not have been written correctly (just a hunch, I'm no expert...).

If this system uses no old grub-bootloader but instead EFI
(grub-efi-bootloader), maybe writing the bootloader to the mainboard
failed (it is not only written to disk), perhaps because the mainboard
NVRAM is full and needs to be cleaned with efibootmgr/efivar/such
utilities.


> During reconfigure, I did get a warning that my bootloader configuration
> used 'target', which is apparently deprecated in favor of 'targets'.  I
> wasn't paying too much attention, and ignored the warning.... I don't know
> if that could be the cause of a missing or incorrect boot record?  (In that
> case, I suggest this warning should be an ERROR ;-) )

No, the old target would fall back to targets.  The warning is only a
warning that you should switch to (targets (list "…")).



> I checked using a live USB, and it seems the whole system is still there on
> the hard drive.  Is there a way to restore my system, keeping the existing
> /gnu/store?  Or do I have to reinstall from scratch, remove the existing
> /gnu/store and rebuild everything (shouldn't be too much work using Guix,
> but way less elegant :) )
> 
> Thank you!
> 
> Thomas

I search on Duckduckgo for “site:lists.gnu.org guix chroot”, you
should read there how to chroot into your system so you can
reconfigure.

Regards,
Florian


  reply	other threads:[~2021-10-01  6:54 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-30  7:43 repair broken boot record Thomas Danckaert
2021-10-01  6:53 ` pelzflorian (Florian Pelz) [this message]
2021-10-05  9:28   ` Thomas Danckaert
2021-10-05 11:04     ` pelzflorian (Florian Pelz)
2021-10-06  8:23       ` Thomas Danckaert
2021-10-06  9:28         ` pelzflorian (Florian Pelz)
2021-12-13 14:16           ` Thomas Danckaert
2021-12-13 16:12             ` pelzflorian (Florian Pelz)

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