upgrade 13.10 to 14.04 moved grub to MBR

[Guus Geluk]

I upgraded from 13.10 to 14.04 via the update manager. Before upgrade Grub was in the Ubuntu partition and I booted Grub via the windows7 bootmenu (modified with EasyBCD). During the Upgrade grub was automatically installed in MBR. After reboot it showed Grub, but choosing Ubuntu, it did initialize a start (Screen changed) then stopped. (Windows worked fine). I noticed however there was no disk activity at all. So I suspected something wrong with the Ubuntu Grub entry. I then installed 14.04 on another partition with the live.iso on USB, Grub was renewed in the process, and then the upgraded partition did start and all was well with the upgrade.

Expected behaviour: Keep Grub in the Partition or move it to the MBR after asking. If allowed to move Grub to MBR, it should at least work.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.2
ProcVersionSignature: Ubuntu 3.11.0-19.33-generic 3.11.10.5
Uname: Linux 3.11.0-19-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Mon May 5 03:47:46 2014
InstallationDate: Installed on 2014-02-09 (84 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=nl
 PATH=(custom, no username)
 XDG_RUNTIME_DIR=<set>
 LANG=nl_NL.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: release-upgrade
UpgradeStatus: Upgraded to trusty on 2014-04-17 (17 days ago)
VarLogDistupgradeTermlog:

[Guus Geluk (onsitecd)]

Addition maybe relevant:

After I got the upgraded partition to start, I noticed that Windows7 no longer was in the Grub menu. So I launched the app "Grub customizer". Saving Grub however did not correct this. I then noticed that according to "Grub customizer" Grub was not in the MBR, so it saved it to the partition. After choosing "install in MBR" the problem was solved.

So it seems that even though Grub was installed in MBR, Ubuntu itself was not aware of that.