I recently installed Ubuntu 13.10 and am having some issues getting GRUB to work with me. Whenever I want to get to GRUB (to boot Ubuntu), I have to manually select it: . Then I can select Ubuntu from there. However, I want to make GRUB the default bootloader for my machine so it doesn't autoboot into Windows if I forget to press esc on boot. My GRUB screen looks like this: . When I select Windows, I get this screen: . If someone could help me figure out how to make grub my default bootloader and how to boot into windows from GRUB, I would love it! Thanks :D
Your laptop is using UEFI, which is needed for Windows 8 to secure boot.
To fix this, leave the boot option to "OS boot Manager" and boot a live-cd/usb and select try Ubuntu. When at the desktop start Boot-Repair and click "Recommended repair". It will give a paste.ubuntu.com/XXXXXX/ url, note that down as we need it the repair doesn't work. Now reboot and you should see the GRUB menu.