I would like to thank you for taking the time to read this.
My problem: I tried to install Ubuntu 12.04.4 LTS on a system in my Lab but after the installation when I restarted the system it booted straight to Windows. I restarted it many times but I did not get a boot option to load Ubuntu. During the installation I do remember the installer showing that it was installing GRUB so I want to know how I can boot to Ubuntu.
The system I used has Windows 7 Enterprise edition. I created 100 GB partition (/dev/sda6) and a 5GB swap partition (/dev/sda7) before installing Ubuntu in the 100 GB partition. I chose /dev/sda for boot loader installation. Before installation I noticed that there already was a 26 GB ext4 partition so I am guessing that someone had previously tried installing Linux on this system. Anyway I needed more space so I carried out my installation in the 100GB partition.
I have tried all different boot orders possible in the BIOS, I have tried re-formatting and re-installing Ubuntu but it still boots into Windows directly. In windows, System and security → System → Advanced system settings → Advanced → Startup & Recovery → Settings: lists Windows 7 as the default OS and doesn't give me a choice to select Ubuntu in the drop down menu.
I have tried the recommended repair in boot-repair but it gives me an error:
Boot repair: Please open a terminal and type this:
sudo chroot "/mnt/boot-sav/sda6" dpkg --configure -a
sudo chroot "/mnt/boot-sav/sda6" apt-get install -fy
sudo chroot "/mnt/boot-sav/sda6" apt-get purge -y --force-yes grub* shim-signed
I type them but nothing seems to happen. Then when I click the forward button I get this message:
GRUB is still present. Please try again.
I have used Boot-repair to make a Boot-info summary
Please tell me how to proceed.
Thanks.
