grub 2 failed to install on installation of Ubuntu 19.04

[Chris Joyce]

I was installing Ubuntu 19.04 64bit as a dual to windows 10 32 bit. It came to installing grub 2 when it failed.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity 20.04.15.2
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckMismatches: ./boot/grub/efi.img
CasperMD5CheckResult: fail
CasperVersion: 1.445.1
CurrentDesktop: ubuntu:GNOME
Date: Thu Mar 18 10:59:51 2021
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
ProcEnviron:
 LANGUAGE=en_GB.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Chris Guiver (guiverc)]

Thank you for taking the time to report this issue, and helping make Ubuntu better.

Ubuntu 19.04 is EOL (end-of-life), refer https://fridge.ubuntu.com/2020/01/23/ubuntu-19-04-disco-dingo-end-of-life-reached-on-january-23-2020/

If this bug report is about 19.04, it can only get closed, however your release details gathered by `apport` (ubuntu-bug) show Ubuntu 20.04 LTS.

How does the Ubuntu 19.04 relate to this bug? It's unclear, or was that just a mistake? Please clarify.