Grub fatal error during install

[shaula]

During the instalation of ubntu 12.04.2 i have received the grub install fatel error.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubiquity 2.10.24 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 3.5.0-25.38~precise1-generic 3.5.7.4
Uname: Linux 3.5.0-25-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
CasperVersion: 1.315.1
Date: Mon Feb 25 22:11:13 2013
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --
LiveMediaBuild: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130224)
MarkForUpload: True
ProcEnviron:
 TERM=unknown
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[shaula (shaul-avraham)]

The ubuntu 12.04 flavours (kubuntu, linux mint 13) produced that same error.
Linux mint 14.1 managed to get installed without any issues.
Is it possible to update the ubuntu 12.04.2 installer?

[shaula (shaul-avraham)]

I tried to install the boot loader on sda6 (/boot).
only linux mint 14.01 managet to be installed.
It would be nive to have an updated 12.04 LTS without this bug.