[Bug 1770530] [NEW] After a fresh instalation, Grub 2 could'not be installed in /.

[Facundo Gilles]

Public bug reported:

I am trying to install a fresh Ubuntu 18.04 with dual booting. After
normal boot in UEFI mode from Ubuntu liveusd, I selected "something
else" option. My plan: split the root "/" in 3 partitions: /boot, / ,
and /home, all in my /dev/sda hard disk. Not sure if it is important but
win7 partitions are in the same HDD. I hope it helps. Best!

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CasperVersion: 1.394
Date: Thu May 10 22:43:08 2018
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug bionic ubiquity-18.04.14 ubuntu

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https://bugs.launchpad.net/bugs/1770530

Title:
  After a fresh instalation, Grub 2 could'not be installed in /.

Status in grub-installer package in Ubuntu:
  New

Bug description:
  I am trying to install a fresh Ubuntu 18.04 with dual booting. After
  normal boot in UEFI mode from Ubuntu liveusd, I selected "something
  else" option. My plan: split the root "/" in 3 partitions: /boot, / ,
  and /home, all in my /dev/sda hard disk. Not sure if it is important
  but win7 partitions are in the same HDD. I hope it helps. Best!

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubiquity 18.04.14
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CasperVersion: 1.394
  Date: Thu May 10 22:43:08 2018
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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