It's the GRUB config file that was created by the installer then modified by subsequent package updates (file has not been manually edited).
grub.cfg.new file attached. ** Attachment added: "grub.cfg.new" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863752/+attachment/5329550/+files/grub.cfg.new -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1863752 Title: Removal of linux-image-5.3.0-29-generic fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863752/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs