I installed Ubuntu 13.04 on the Surface Pro and now I can't boot into it. Could anyone help me figure out why? Here are the steps I took: 1: Disabled Secureboot in the BIOS 2: Shrank the system partition on the SSD by 10 GB. 3: Burned a bootable 64 bit Ubuntu 13.04 ISO onto a flash drive 4: Rebooted into the flash drive, went through the initial Ubuntu configuration options. 5: In the 10 GB empty space, added a 600 MB logical partition as swap. 6: In the remaining 9.4 GB of empty space, added a primary ext4 partition mounted as / 7: Installed the MBR to the SSD (dev/sda). 8: Finished the installation Ubuntu finished installing and told me to reboot. I did so and it booted straight into Windows without offering any other boot options. What did I do wrong?