Dear Maintainer,

starting debian-live-13.0.0-amd64-standard.iso in qemu, and picking the option
"Live system (amd64)" leads to the following error message:

```
mount: /sys/firmware/efi/efivars: unknown filesystem type 'efivarfs'.
dmesg(1) may have more information after failed mount system call.
```

The system however boots successfully into a live environment after that error.
No error is shown in dmesg in the booted live system.

Video demonstrating the bug attached.

I've been rebuilding the official live images.

When building on a bookworm system, booted with BIOS, the kernel module
'usr/lib/modules/6.12.38+deb13-amd64/kernel/fs/efivarfs/efivarfs.ko.xz'
is not included in the initrd.img files (in /live and the squashfs)

However, if the image would have been built on a system booted with
UEFI, the module would have been included.

For the live images, I've added a reproducible hotfix with number 2013
[1]. I've reported a bug on mdadm with a patch [2]

With kind regards,
Roland Clobus

[1] https://salsa.debian.org/live-team/live-build/-/merge_requests/440
[2] #1114521

Hello,

Bug #1110729 in live-build reported by you has been fixed in the
Git repository and is awaiting an upload. You can see the commit
message below and you can check the diff of the fix at:

https://salsa.debian.org/live-team/live-build/-/commit/1fb62d7f51efd1c53e3a52c153ff61d002b01e62
Always include efivarfs in the initrd image, independent whether the
host was booted via BIOS or UEFI (Closes: #1110729)
------------------------------------------------------------------------

(this message was generated automatically)
-- 
Greetings

https://bugs.debian.org/1110729