[ubuntu] dual boot ubuntu with windows 8 pre-installed

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http://ubuntuforums.org – http://paste.ubuntu.com/5644829/ Hi I have a lenovo k430 with pre installed windows and I installed ubuntu 12.10 64-bit on UFEI however the grub menu does not show and windows is booted. I tried using boot repair recommend twice however this did not work Any advice will be much appreciated Thank you (Hardware)