I recently installed Ubuntu 13.10, and thought I properly set things up to dual boot into Windows 8, but I continually get .efi errors when I attempt to boot into Windows 8. I installed Boot-Repair and used that to run the recommended fixes. It provided additional boot options within the GRUB2, but none (other than Ubuntu) are working. Here's the file I pulled from Boot Repair that shows no errors! http://paste.ubuntu.com/6321946/ I do appreciate any help - thank you!