[Bug 1783631] [NEW] Dual boot install - Grub install failed.

[Wes perkhiser]

Public bug reported:

Trying a dual boot install.  
/dev/sda is a Windows SSD and boots normally.
/dev/sdb is supposed to be the Ubuntu SSD, but grub will not install from the graphical install program.  
Command line install "sudo grub-install /dev/sdb" returns an error "failed to get canonical path of `cow'."

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: Wed Jul 25 14:50:19 2018
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
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/1783631

Title:
  Dual boot install - Grub install failed.

Status in grub-installer package in Ubuntu:
  New

Bug description:
  Trying a dual boot install.  
  /dev/sda is a Windows SSD and boots normally.
  /dev/sdb is supposed to be the Ubuntu SSD, but grub will not install from the graphical install program.  
  Command line install "sudo grub-install /dev/sdb" returns an error "failed to get canonical path of `cow'."

  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: Wed Jul 25 14:50:19 2018
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
  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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