[Bug 1920009] Re: 21.04_full installation to USB: unable to install GRUB; grub-install failed

[Earl]

Hirsute build 18 April

Unable to do full install to USB3 stick.

Executing 'grub-install /dev/sdd' failed. This is a fatal error.

This after choosing to do a full erase and let the installer do what it

Additionally, today I tried to do a full install to an external USB3
SSD.  The SSD was preformatted with a FAT32 EFI partition, flagged to
esp,boot along with a number of ext4 partitions of 16 and 32 GB size.
Towards the start of the installation, an error came saying ubi-partman
problem with exit code 10.

In summary, until now with multiple attempts to do full installs, all
have failed with the exception of one external USB3 hard disk (a second
HDD of same make and model failed).

The failures are usually grub-install, but sometimes ubi-partman exit
code 10 failures.

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https://bugs.launchpad.net/bugs/1920009

Title:
  21.04_full installation to USB: unable to install GRUB; grub-install
  failed

Status in grub-installer package in Ubuntu:
  New

Bug description:
  Installing from 21.04 LIVE USB to another USB. Let the installer do
  everything. It found the existing 20.04 installation and reformatted
  the ext partition, leaving the EFI partition untouched.  Only 2 USB
  drives in system, no other drives of any kind present. When almost
  finished, error appears: unable to install grub in /dev/sbd failed.
  Executing 'grub-install /dev/sdb' failed.

  ProblemType: Bug
  DistroRelease: Ubuntu 21.04
  Package: ubiquity 21.04.9
  ProcVersionSignature: Ubuntu 5.10.0-14.15-generic 5.10.11
  Uname: Linux 5.10.0-14-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu60
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.460
  Date: Thu Mar 18 12:12:12 2021
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu-mate.seed maybe-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu-MATE 21.04 "Hirsute Hippo" - Alpha amd64 (20210317)
  RebootRequiredPkgs:
   linux-image-5.10.0-14-generic
   linux-base
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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