On 08/09/2023 at 13:56, Marc Haber wrote :
I tried installing sid from mini.iso into a libvirt/qemu/kvm VM with BIOS "firmware", choosing mainly default values, and ended up with the system logging "grub-installer: error: Error creating /target/sys/firmware/efi/efivars" and an error message "Failed to mount /target/proc, Mounting the proc file system on /target/proc failed".
This issue has been discussed in #1031183 starting from <https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1031183#17>(it is a different issue from the original bug report, so a separate bug should have been filed) and a merge request is in progress.
<https://salsa.debian.org/installer-team/grub-installer/-/merge_requests/19>