I have a sony vaio laptop, bought around june 2012 with Windows 7 pre-installed. My BIOS is a InsydeH20 rev 3.7.
I'm using Ubuntu alone for a long time now, I would like to install a dual-boot with Windows 8.1 alongside Ubuntu 14.04 LTS.
First, I made a backup of all my files and formatted my hard drive. I turned on the UEFI option in my BIOS and I changed the partition table from MBR to GPT. Then, I installed Windows 8, I let it made all the partition it wanted. I upgraded it to Windows 8.1, then I turned off the fast boot option.
I installed Ubuntu on another partition and I created a last partition to share files between Windows and Ubuntu.
When I rebooted, I couldn't see Grub. It loaded right into Windows.. So I used boot-repair from my Ubuntu LiveUSB but that didn't change anything !
Here is the link from boot-repair : http://paste.ubuntu.com/8008454/
So I would like to have Grub when my computer boots.
Also, I cannot turn off the secure boot option. There is no such thing in my BIOS and I can't see the UEFI setting in Windows. I mean when I'm here there is no UEFI firmware settings.
Hope this is well explained, let me know if you need more informations, Antoine