Installer for Ubuntu 20.04 failed

[Daan Heuvelbeuk]

My installation keeps on failing. First during an update from 18.04 to 20.04, next several times with a live DVD.

Ubuntu 20.04.1 LTS - AMD® Fx(tm)-4350 quad-core processor × 4 - Gnome version 3.36.3 - Windowing system X11

What did I do: Booted to Live DVD, clicked the 'Install Ubuntu 20.04.1 LTS' button, among others while partitioning created:
- a biosgrub partition of 1 MB
- a swap partition of 16187 MB
- formatted a root partition of 41154 MB
- used a partition for the existing home drive

It failed which resulted in this bug report.

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: ./dists/focal/main/binary-amd64/Packages.gz
CasperMD5CheckResult: skip
CasperVersion: 1.445.1
Date: Wed Oct 21 13:52:41 2020
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)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)