[Bug 1886054] Re: Unable to install Ubuntu MATE 20.10 daily on MBR system - bootloader install failed

[Norbert]

** Attachment added: "logs from / (host)"
   https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1886054/+attachment/5389015/+files/log-host.tar.gz

** Also affects: ubiquity (Ubuntu)
   Importance: Undecided
       Status: New

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Title:
  Unable to install Ubuntu MATE 20.10 daily on MBR system - bootloader
  install failed

Status in grub2 package in Ubuntu:
  New
Status in ubiquity package in Ubuntu:
  New

Bug description:
  Steps to reproduce:
  1. Download groovy-daily for MATE ()
  2. Insert ISO into VirtualBox VM without EFI (so MBR is used)
  3. Follow the installation wizard for Install (entire disk) instruction

  Expected results:
  * system is installed normally with GRUB bootloader

  Actual results:
  * system installation is interrupted on the GRUB installation stage (see screenshot of the error attached) with error window and text "Sorry, an error occurred and it was not possible to install the bootloader at the specified location.".

  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: grub2 (not installed)
  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: 2.20.11-0ubuntu42
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.452
  Date: Thu Jul  2 09:37:10 2020
  LiveMediaBuild: Ubuntu-MATE 20.10 "Groovy Gorilla" - Alpha amd64 (20200702)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
  SourcePackage: grub2
  UpgradeStatus: No upgrade log present (probably fresh install)

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