Guix bios installation: Grub error: unknown filesystem

Hi,

I'm having trouble installing guix in qemu, using a "fresh" guix ISO.

```

building /gnu/store/byjlc85abyjc3fjj9z982677skmda7ib-module-import compiled.drv...

building /gnu/store/psw8xn9qpsjjnrqmjrfv0v3jj9fphq5m-module-import-compiled.drv...

building /gnu/store/a1zcrrcdwhb4wb2g4r0ph8mqclq7f5xn-install-bootloader.scm.drv...

guix system: error:

'/gnu/store/li1ic17hz460vp1sg0cx2dwgw8q7i8pj-grub-2.06/sbin/grub-install

--no-floppy --target=i386-pc --boot-directory /mnt/boot /dev/sda' exited with

status 1; output follows:

Installing for i386-pc platform.

/gnu/store/li1ic17hz460vp1sg0cx2dwgw8q7i8pj-grub-2.06/sbin/grub-install:

error: unknown filesystem.

```

Here's what I've tried so far:

1. The ISO from 2022

Success

2. Generated a new ISO today: Failure

These are the channels, on the booted ISO:

```

guix describe

guix 65e8472

repository URL: https://git.savannah.gnu.org/git/guix.git

branch: master

commit: 65e8472a4b6fc6f66871ba0dad518b7d4c63595e

```

Steps I used to install (1) and (2):

```

parted -s /dev/sda -- mklabel msdos mkpart primary ext4 1MiB 100%

parted /dev/sda set 1 boot on

mkfs.ext4 -L my-root /dev/sda1

mount LABEL=my-root /mnt

cp /etc/configuration/lightweight-desktop.scm /mnt/etc/config.scm

# adjust disk, bootloader

herd start cow-store /mnt

guix system init /mnt/etc/config.scm /mnt

```

Findings:

I didn't really dig too deeply yet; Only noticed that this command produces a

different result, depending on whether the install succeeds, or not `grub-probe

--target=fs --device /dev/sda`

- Success: `ext2`

- Failure: `grub-probe: error: unknown filesystem.`

I also tried using GPT instead of MBR, but it makes no difference.

Cheers,

Franz

PS: I send this (incorrectly?) to guix-devel@gnu.org yesterday and never got a

confirmation of some sort; So I'll submit again here.

Franz Geffke <m@f-a.nz> [2024-04-20 09:25:39+0100]:

I got the same error during recent installation and had to disable the metadata_csum_seed

ext4 feature on the root fs:

tune2fs -O ^metadata_csum_seed /dev/sda1

I think this has been fixed in grub but hasn’t hit guix master yet. Some more info here:

Hi Timotej,

> tune2fs -O ^metadata_csum_seed /dev/sda1

That's exactly what I needed; Thanks so much!

Works great on MBR, GPT and with encrypted disk too.

Cheers,

Franz