Installation failure in grub step

[Victor Sobreira]

I tried to install Ubuntu 20 in a Dell Inspiron notebook, with a 480GB SSD disk with separated partitions for boot, root, home and swap.

It appears that the install failed in the grub step.

It is a second try with Ubuntu 20, since I had problems with the boot in the first install.

In the first install it was everything ok, but after some days (not sure if there is some conflict with updates or other software install) the system stopped to boot and I had to use the old SSD with a previous install of Ubuntu 16 just to load the system. In this first install I didn't have a separated partition for boot. The boot mode was GPT, apparently.

So I decided to proceed with a fresh install of Ubuntu 20 and with separated boot partition.

It doesn't work and this is the reason for this report.

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: ubiquity 20.10.13
ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14
Uname: Linux 5.8.0-25-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu50
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.455
CurrentDesktop: ubuntu:GNOME
Date: Sun Nov 8 14:38:13 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
ProcEnviron:
 LANGUAGE=pt_BR.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pt_BR.UTF-8
 LC_NUMERIC=C.UTF-8
RebootRequiredPkgs:
 linux-image-5.8.0-25-generic
 linux-base
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)