install of 20.04.2 failed - launcher crashed

[anewbie]

Tried to install ubuntu 20.04.2. The disk has partitions so i tried to have it reformat an existing partition (leaving hte other partitions untouched) and mount / - install fails - no clue why no information provided.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity 20.04.15.10
ProcVersionSignature: Ubuntu 5.8.0-43.49~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-43-generic x86_64
NonfreeKernelModules: wl zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckMismatches: ./pool/main/l/linux-signed-hwe-5.8/linux-image-5.8.0-43-generic_5.8.0-43.49~20.04.1_amd64.deb
CasperMD5CheckResult: skip
CasperVersion: 1.445.1
CurrentDesktop: ubuntu:GNOME
Date: Sun May 23 12:04:02 2021
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed initrd=/casper/initrd quiet splash --- maybe-ubiquity
LiveMediaBuild: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Paul White (paulw2u)]

From the bug description:

 CasperMD5CheckMismatches: ./pool/main/l/linux-signed-hwe-5.8/linux-image-5.8.0-43-generic_5.8.0-43.49~20.04.1_amd64.deb
 CasperMD5CheckResult: skip

It's possible you had a bad write to your media or for some other reason its contents could not be read correctly. Please always allow the integrity check to complete so that any problems can be displayed.

Closing as "Invalid" due to the time that has elapsed since this issue was reported.