[Bug 1850734] [NEW] grub was being installed on wrong partition and then crashed

[WeiHua Liu]

Public bug reported:

Booted live session on USB. Ubuntu 19.09 was being installed on
(/dev/sdb) USB 2.0 flash drive formatted entire drive as zfs. Grub was
being installed on internal SSD (/dev/sda4 installed ), grub
installation failed and ubiquity crashed.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: ubiquity 19.10.21
ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
Uname: Linux 5.3.0-18-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu8
Architecture: amd64
CasperVersion: 1.427
Date: Thu Oct 31 10:27:14 2019
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed quiet splash ---
LiveMediaBuild: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug eoan ubiquity-19.10.21 ubuntu

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https://bugs.launchpad.net/bugs/1850734

Title:
  grub was being  installed on wrong partition and then crashed

Status in grub-installer package in Ubuntu:
  New

Bug description:
  Booted live session on USB. Ubuntu 19.09 was being installed on
  (/dev/sdb) USB 2.0 flash drive formatted entire drive as zfs. Grub was
  being installed on internal SSD (/dev/sda4 installed ), grub
  installation failed and ubiquity crashed.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: ubiquity 19.10.21
  ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
  Uname: Linux 5.3.0-18-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu8
  Architecture: amd64
  CasperVersion: 1.427
  Date: Thu Oct 31 10:27:14 2019
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed quiet splash ---
  LiveMediaBuild: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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