This may be a duplicate of question that another user has posted, but unfortunately when I try to access the question I get a message stating that the original question was removed for moderation reasons.
I previously had a working Ubuntu 12.10 installation that dual booted with Windows 8, although I had to run the recommended Boot-Repair setting to get Ubuntu working. I installed Ubuntu 14.04 from a DVD yesterday over my Ubuntu 12.10 installation and have found that, despite there being a Windows 8 entry in grub2, only Ubuntu will load. If I select the Windows 8 entry Grub reloads. I get a UEFI menu if I press F10 after switching on the computer, but the Windows entry loads grub. There may be an error message generated here, but it is only on screen for a fraction of a second and I've not yet been able to capture it. I have tried rerunning Boot-Repair using the Ubuntu 14.04 livedvd and the following commands:
sudo add-apt-repository ppa:yannubuntu/boot-repair sudo sh -c "sed -i 's/trusty/saucy/g' /etc/apt/sources.list.d/yannubuntu-boot-repair-trusty.list" sudo apt-get update sudo apt-get install -y boot-repair && boot-repair
I selected the 'Recommended Repair' option and I got a warning about errors occurring and this link to share: http://paste.ubuntu.com/7340206/ As before, Ubuntu boots fine but I still cannot load Windows 8 either from Grub or from the UEFI menu. I do not believe that I have changed any BIOS settings since my successful Ubuntu 12.10/Windows 8 dual boot setup so I was expecting everything to work.
My computer is a Samsung Series 3 NP350V5C laptop and I have a recovery partition that I can access by holding F4 when turning on my computer. I don't believe that I have any other Windows utilities.
I am happy to provide further logs and pictures of my BIOS settings if required. I have also posted in the Boot-Repair thread on the forums as well as emailing email@example.com as advised by Boot-Repair. Thank you in advance for any help that you can offer.
Edit: as requested here is the update-grub output:
sudo update-grub Generating grub configuration file ... Found linux image: /boot/vmlinuz-3.13.0-24-generic Found initrd image: /boot/initrd.img-3.13.0-24-generic Found Windows Boot Manager on /dev/sda2@/EFI/Microsoft/Boot/bootmgfw.efi Adding boot menu entry for EFI firmware configuration done
Also, this might be related to https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1308758