GNU bug report logs - #70808
Bootloader can't detect separate disk

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From: Divya <divya <at> subvertising.org>
To: 70808 <at> debbugs.gnu.org
Subject: bug#70808: Bootloader can't detect separate disk
Date: Thu, 09 May 2024 07:46:21 +0000

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On 7 May 2024 02:04:44 GMT, Divya <divya <at> subvertising.org> wrote:
>Hello,
>
>Here is my `bootloader` section of `config.scm`:
>
>```
>(bootloader (bootloader-configuration (bootloader grub-bootloader) (targets (list "/dev/sda")) 	 (menu-entries (list 			 (menu-entry 			 (label "Arch Linux") 			 (device (uuid "886fb01f-323f-40ab-9434-9f00feb96446" 'ext4)) 			 (linux "/boot/vmlinuz-linux-rt") 			 (linux-arguments '("root=UUID=886fb01f-323f-40ab-9434-9f00feb96446 rw quiet")) 			 (initrd "/boot/initramfs-linux-rt.img")))) 	 (default-entry 0) (keyboard-layout keyboard-layout)))
>```
>
>I am trying to dual boot Guix with Arch, the former resides in `/dev/sda8` and the latter at `/dev/sdb1`. But the aforementioned configuration doesn't load Arch's kernel resulting in a 'kernel not found error' on the GRUB screen.
>
>I have tried to do some troubleshooting by changing the parameters, but nothing seems to be working. And importantly, when I checked at the GRUB cli by doing `ls`, I see `/dev/sdb1` to be `(hd1,msdos1)` but with `ls` it shows that no file system is detected on it, when it has the `ext4` filesystem that I can access by mounting it.
>
>What could be causing this? I checked `/boot/grub/grub.cfg` and it is trying to search the appropriate disk using UUID but because of the filesystem error, it can't access it and thus the kernel doesn't boot.
>
>I'd like some help on this, also `os-prober` correctly identifies the Arch distro. Can I use it with my `config.scm`? Probably not? Is it possible to integrate it? I have some familiarity with bootloaders, I'd like to see if I can contribute here.
>
>Regards,
>
>Divya
Pimg!

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