[Bug 1871993] [NEW] 20.04 Beta - grub installer fails and leaves system unusable

[Barnaby Dalton]

Public bug reported:

When doing a fresh installation of Ubuntu 20.04 Beta alongside Windows 10,
I get an error message during grub-installer that grub2 could not be installed.
No further details were offered, and I could not access the console after the
error was reported.
After rebooting, I am unable to access the installed system.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity 20.04.9
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu22
Architecture: amd64
CasperVersion: 1.442
Date: Thu Apr  9 23:23:46 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed quiet splash ---
LiveMediaBuild: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: grub-installer (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal ubiquity-20.04.9 ubuntu

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to grub-installer in Ubuntu.
https://bugs.launchpad.net/bugs/1871993

Title:
  20.04 Beta - grub installer fails and leaves system unusable

Status in grub-installer package in Ubuntu:
  New

Bug description:
  When doing a fresh installation of Ubuntu 20.04 Beta alongside Windows 10,
  I get an error message during grub-installer that grub2 could not be installed.
  No further details were offered, and I could not access the console after the
  error was reported.
  After rebooting, I am unable to access the installed system.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubiquity 20.04.9
  ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
  Uname: Linux 5.4.0-21-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu22
  Architecture: amd64
  CasperVersion: 1.442
  Date: Thu Apr  9 23:23:46 2020
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed quiet splash ---
  LiveMediaBuild: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1871993/+subscriptions