package initramfs-tools 0.136ubuntu6.6 failed to install/upgrade: installed initramfs-tools package post-installation script subprocess returned error exit status 1

[Rucel Javier]

it does not complete the update

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: initramfs-tools 0.136ubuntu6.6
ProcVersionSignature: Ubuntu 5.4.0-77.86-generic 5.4.119
Uname: Linux 5.4.0-77-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
CasperMD5CheckResult: skip
Date: Wed Jul 21 19:16:15 2021
ErrorMessage: installed initramfs-tools package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2018-07-28 (1089 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.6
SourcePackage: initramfs-tools
Title: package initramfs-tools 0.136ubuntu6.6 failed to install/upgrade: installed initramfs-tools package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to focal on 2020-10-05 (288 days ago)

[Seth Arnold (seth-arnold)]

Hello Rucel, my guess is you've installed the lilo package. This is not supported. If you can identify a bugfix it could probably be integrated but honestly it'd be easier to either figure out how to use grub in your environment or switch to another distribution that does support using lilo. Grub just works for most people, and it should work for you, too.

Thanks