Hi,
apparently the message is printed by fsck.fat and is harmless (although we should
still fix it). Are you sure that the services fail because of it?
> (file-systems (cons*
> (file-system
> (device (file-system-label "ESP"))
> (mount-point "/boot/efi")
> (type "fat")
Try adding (check? #f) here for testing purposes.
> )