installation failure, unable to install grub file in target folder

[Dionysos]

1) lsb_release -rd Ubuntu 12.04.4 LTS
Release 12.04

2) Ubuntu package x64

3) smoothless installation

4) not so smooth installation, with potential to not being able to boot into

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubiquity 2.10.29
ProcVersionSignature: Ubuntu 3.11.0-15.25~precise1-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
CasperVersion: 1.315.1
Date: Fri Feb 21 20:20:42 2014
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --
LiveMediaBuild: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release amd64 (20140204)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=de_DE.UTF-8
 TERM=unknown
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.