[Bug 1876711] [NEW] installation 20.04 crashed while installing GRUB

[Guido Buitendijk]

Public bug reported:

Installing over 18.04.14, using the two /sda's it was using.
Boot doesn't work, get grub rescue.
The found fixes didn't work as well.
Boot again from flash-drive, re-install 20.04 over previous 20.04 (yes, 18.04 no longer present).
The drive also houses sda2, sda3, sda4 which are backups of partitions from a former harddrive + a Windows10 partition.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity 20.04.15
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.445
Date: Mon May  4 13:28:38 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
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-20.04.15 ubuntu

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https://bugs.launchpad.net/bugs/1876711

Title:
  installation 20.04 crashed while installing GRUB

Status in grub-installer package in Ubuntu:
  New

Bug description:
  Installing over 18.04.14, using the two /sda's it was using.
  Boot doesn't work, get grub rescue.
  The found fixes didn't work as well.
  Boot again from flash-drive, re-install 20.04 over previous 20.04 (yes, 18.04 no longer present).
  The drive also houses sda2, sda3, sda4 which are backups of partitions from a former harddrive + a Windows10 partition.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubiquity 20.04.15
  ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
  Uname: Linux 5.4.0-26-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.445
  Date: Mon May  4 13:28:38 2020
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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