I'm trying to set up a dual boot on my yoga 2 pro running windows 10 (shipped with win8), trying to install ubuntu 14.04.3
I've disabled secure boot and fast boot in bios setup. When installing, I created the following partitions manually:
/ = all free space minus 8 gb, swap = 8 gb
and pointed bootloader to install to default selection, which was /dev/sda (which says my 256GB SSD). /dev/sdb description was my installation media.
Then during install it fails to install grub2. So I tried again but this time selected the windows boot loader efi partition which was /dev/sda2. Same error with grub2.
I did try searching and tried a solution that worked for someone elses yoga 2 pro, to install grub-efi-amd64 and run grub-install /dev/sda which produced an error.
Then tried the installer again but this time subtracted 300mb from my root partition and used it to create /boot and pointed the bootloader to install there. The install worked without error, but when I shut down and power on it boots up windows. And when looking in boot up menu there is no option to boot up ubuntu. I then booted back into ubuntu live and tried boot-repair and did recommended repair, and it fails.
When creating the boot partition, the first time I selected ext2 formatting, which made the installer finish successfully, the second time I tried efi and it causes the installer to fail.
Can anyone help? If anymore details needed please let me know thanks.