[Bug 1935718] [NEW] grub installation failed on shared windows drive after installing 21.10

[Martin Herink]

Public bug reported:

install on a drive with existing windows 10 installation.

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: ubiquity 21.10.3
ProcVersionSignature: Ubuntu 5.11.0-20.21+21.10.1-generic 5.11.21
Uname: Linux 5.11.0-20-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu67
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.463
CurrentDesktop: ubuntu:GNOME
Date: Fri Jul  9 20:09:14 2021
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 21.10 "Impish Indri" - Alpha amd64 (20210709)
ProcEnviron:
 LANGUAGE=en_CA.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_CA.UTF-8
 LC_NUMERIC=C.UTF-8
RebootRequiredPkgs:
 linux-image-5.11.0-20-generic
 linux-base
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug impish ubiquity-21.10.3 ubuntu

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https://bugs.launchpad.net/bugs/1935718

Title:
  grub installation failed on shared windows drive after installing
  21.10

Status in ubiquity package in Ubuntu:
  New

Bug description:
  install on a drive with existing windows 10 installation.

  ProblemType: Bug
  DistroRelease: Ubuntu 21.10
  Package: ubiquity 21.10.3
  ProcVersionSignature: Ubuntu 5.11.0-20.21+21.10.1-generic 5.11.21
  Uname: Linux 5.11.0-20-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu67
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.463
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Jul  9 20:09:14 2021
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 21.10 "Impish Indri" - Alpha amd64 (20210709)
  ProcEnviron:
   LANGUAGE=en_CA.UTF-8
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_CA.UTF-8
   LC_NUMERIC=C.UTF-8
  RebootRequiredPkgs:
   linux-image-5.11.0-20-generic
   linux-base
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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