Public bug reported:
First please notice that I'm not an expert! See the full story here: http://ubuntuforums.org/showthread.php?t=2028699 The main problem is: when doing a fresh installation of Ubuntu 12.04 64 bits from a USB drive on a dual-boot system (with Windows 7), grub-efi is installed instead of grub-pc, which causes grub not to be installed in the MBR. Here are some details (don't know exactly what matters and what doesn't): - when booting on the USB drive I can see the message "error: "prefix" is not set" (but the Ubuntu menu shows normally after a few seconds) - during the install process I selected "something else" in "installation type" in order to select a specific partition. "device for boot loader installation" changes automatically to /dev/sda after selecting the partition, as expected. - the result of dpkg --get-selections | grep grub is grub-common install grub-efi install grub-efi-amd64 install grub-efi-amd64-bin install grub2-common install - after the installation I tried sudo update-grub sudo grub-install /dev/sda none of of these gave any errors, but grub was still not in the MBR after that. - the problem is fixed by simply installing grub-pc: sudo apt-get install grub-pc - the BootInfo output is at http://paste.ubuntu.com/1099942 (done after booting from the USB drive, selecting "try Ubuntu") - important: as explained in the original thread http://ubuntuforums.org/showthread.php?t=2028699, I did a second install in order to reproduce the problem (first install on /dev/sda6, second on /dev/sda7). Since I had corrected the problem (from /dev/sda6), you can see grub in the MBR -> but it's not the one which should have been installed the second time (see original thread for details) did not see how to attach two distinct files to this bug report (???), so I'm concatenating /var/log/installer/syslog and /var/log/installer/partman -> search the "#####" ** Affects: ubiquity (Ubuntu) Importance: Undecided Status: New ** Tags: grub -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1026616 Title: Ubiquity installs grub-efi on non-GPT disk To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1026616/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
