[Bug 1902269] Re: Ubuntu 20.10 on BIOS hardware - Installation with manual partitioning fails while executing "grub-install /dev/sda"

[Jean-Baptiste Lallement]

*** This bug is a duplicate of bug 1901137 ***
    https://bugs.launchpad.net/bugs/1901137

** This bug has been marked a duplicate of bug 1901137
   UEFI on Legacy - grub-install fails due to no space left on ESP

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https://bugs.launchpad.net/bugs/1902269

Title:
  Ubuntu 20.10 on BIOS hardware - Installation with manual partitioning
  fails while executing "grub-install /dev/sda"

Status in ubiquity package in Ubuntu:
  Confirmed

Bug description:
  (I'm duplicating this bug
  https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1893964 in
  order to provide more data to developers).

  Installation with manual partitioning of Ubuntu 20.10 on BIOS hardware
  fails while executing "grub-install /dev/sda".

  We already know as reported in bug #1893964 that this happens because for some reasons the installation system expect an existing EFI boot partition.
  On the same machine I have also tried to install Ubuntu 20.10 using the automatic option "Erase the disk and install Ubuntu..". In that case the installation succeeds, with the automatic creation of the EFI partition.

  Of course being an old computer with old BIOS, there should not be any
  need of an EFI partition on a msdos(mbr) partition table.

  Here what I've done:

  ::: BEFORE INSTALLATION

  With Gparted I have:
  1- erased the hard disk
  2- created an msdos partion table
  3- created a 50GiB Ext4 partition

  ::: INSTALLATION

  I've run a standard installation:
  - enabled 3rd party software
  - chosen the manual partitioning
  - selected the only partition available, formatted as Ext4 and set "/" as mount point

  ::: CRASH

  At one point installation stops with popup window showing: "Executing
  'grub-install /dev/sda' failed. This is a fatal error."

  ::: WORKAROUND

  Just create an EFI partition before installing the system.

  
  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: ubiquity 20.10.13
  ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14
  Uname: Linux 5.8.0-25-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu50
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.455
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Oct 30 16:33:29 2020
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  RebootRequiredPkgs:
   linux-image-5.8.0-25-generic
   linux-base
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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