Today I suddenly see: Processing triggers for initramfs-tools (0.129) ... update-initramfs: Generating /boot/initrd.img-4.9.0-2-amd64 W: initramfs-tools configuration sets RESUME=UUID=eff505d5-d5bf-4bba-8a07-f3d0d11018b9 W: but no matching swap device is available. I: The initramfs will attempt to resume from /dev/sda9 I: (UUID=eff505d5-d5bf-4bba-8a07-f3d0d11018b9) I: Set the RESUME variable to override this. Processing triggers for libc-bin (2.24-10) ... Processing triggers for menu (2.1.47+b1) ...
I have never messed with any of this.