From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ricardo Wurmus <rekado@elephly.net>
Subject: Re: Cannot boot GuixSD after system reconfigure
Date: Thu, 21 Sep 2017 22:28:30 +0200
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To: Roel Janssen <roel@gnu.org>
Cc: help-guix <help-guix@gnu.org>


Hi Roel,

> So, I was able to fix GRUB by manually modifying /boot/grub/grub.cfg:
>
> -search --label --set /dev/sda3
> +search --no-floppy --fs-uuid --set <blkid uuid output>
>
> Now, what changes do I have to make to my config to make it work
> automatically again?

Instead of this:

                 (file-system
                   (device "/dev/sda3")
                   (mount-point "/")
                   (options "ssd")
                   (type "btrfs"))

Try this:

               (file-system
                 (mount-point "/")
                 (options "ssd")
                 (type "btrfs")
                 (title 'uuid)
                 (device (uuid "4dab5feb-d176-45de-b287-9b0a6e4c01cb")))

But do replace the UUID with your actual UUID.  I’ve copied this
straight from the manual and haven’t tested this myself as I’m using
mapped devices and don’t have a btrfs partition.

-- 
Ricardo

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