I wish to add this exact same issue (same error, same result) just struck me after attempting to upgrade to 19.10.
I have downloaded the "boot repair disk" ISO from Sourceforge as recommended on another Ubuntu forum, but am wondering if I should use it or the Ubu Live/boot disk? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1848797 Title: After upgrading to 19.10, boot screen shows: "Error: symbol 'grub_file_filters' not found." To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1848797/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs