Most települt a Debian 13-ra shim-signed és shim-signed-common frissítés. :-)
Csak a végét mutatom, szerintem elég az is most:
Setting up shim-signed:amd64 (1.47+15.8-1) ...
Installing for x86_64-efi platform.
Installation finished. No error reported.
No DKMS packages installed: not changing Secure Boot validation state.
Setting up dirmngr (2.4.7-21+b3) ...
Setting up gpg-wks-server (2.4.7-21+b3) ...
Setting up bind9-dnsutils (1:9.20.11-4) ...
Setting up gpg-wks-client (2.4.7-21+b3) ...
Processing triggers for man-db (2.13.1-1) ...
Processing triggers for debianutils (5.23.1) ...
Processing triggers for initramfs-tools (0.148.3) ...
update-initramfs: Generating /boot/initrd.img-6.12.38+deb13-amd64
I: The initramfs will attempt to resume from /dev/sdb3
I: (UUID=994e5c49-4d71-4140-8653-530cd84332a7)
I: Set the RESUME variable to override this.
Processing triggers for libc-bin (2.41-11) ...
csuhas@ThinkCentre:~$