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Re: grub.cfg does not have luks module for encrypted root

From: swedebugia
Subject: Re: grub.cfg does not have luks module for encrypted root
Date: Sat, 02 Feb 2019 20:02:46 +0100

Joshua Branson <address@hidden> skrev: (2 februari 2019 14:50:17 CET)
>Jack Hill <address@hidden> writes:
>> On Fri, 1 Feb 2019, Joshua Branson wrote:
>>> Jack Hill <address@hidden> writes:
>>>> Ahoy,
>>>> I'm using the attached config.scm for a host with an encrypted gpt
>>>> root partition while booking with bios-grub. It produces the
>>>> grub.cfg, which lacks the luks module, thus grub cannot find the
>>>> kernel.
>>>> If I enter the grub command line and manually insmod luks and
>>>> cryptomount, I can then boot correction.
>>> Out of curiosity how do you boot GuixSD on the grub command line?
>>> The only way I know how to do it is:
>>> set root=(hd0,1)  ; wherever your root partition is
>>> linux /gnu/path/to/vmlinuz-linux-libre root=/dev/sda1
>>> initrd /gnu/path/to/initramfs-linux-libre.img
>>> boot
>>> In arch linux, I know where those paths are: /boot, but it GuixSD
>>> paths are usually buried in /gnu/some/crazy/path...
>> Once I ran 'insmod luks' and 'crytomount (hd0,gpt2)', the filesystem
>> containing the store became available to Grub. I then ran 'configfile
>> (hd0,gpt1)/boot/grub/grub.cfg' to have Grub reprocess the config file
>> that Guix wrote for it. Since the store was now available, Grub was
>> able to load its theme, kernel, and initramfs. Sorry for admitting
>> that step in my summary.
>You're fine.  I was unaware of that command.  I actually didn't know
>to boot guixSD, from grub's command prompt....

I think this is a good thing to include in the manual. Maybe in a 
troubleshooting section?

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