Public bug reported:
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)
** Affects: grub-installer (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug hirsute ubiquity-21.04.9 ubuntu-mate
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https://bugs.launchpad.net/bugs/1920009
Title:
21.04_full installation to USB: unable to install GRUB; grub-install
failed
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