I have a 2013 HP Envy dv7 with Win8 pre-installed, upgraded to Win8.1. I shrank the windows partition by 100MB and made two new partitions for Ubuntu (root + home - 80MB on /dev/sda7, swap - 20MB on /dev/sda8). I basically followed these instructions:
including the boot-repair steps on linux and Windows. Secure boot is disabled.
I tried to install Ubuntu on my Lenovo y50 which comes with Windows 8.1 pre-installed and I succeeded. However, now I am not able to access my Windows side. I have went through the boot repair solution posted here: https://help.ubuntu.com/community/UEFI , I now see the Ubuntu boot menu, but Windows is not there.
I lurked around reading all the posts that mentioned win8, uefi, and 15R's in general and tried to follow the directions given to others best i could. I was trying to resolve why even though it allowed me to install & customize ubuntu 12.04 along side win8, i couldn't get the dual boot screen that lets me choose which one to use upon start up.
Any help is appreciated. I've been trying to fix this for a couple days now.
Trying to dual boot win8 and ubuntu on an HP envy(15-j1063cl). Whenever I boot my computer I get the "grub rescue" screen. I can boot to either ubuntu or windows 8 by booting the right .efi file from the boot options menu.
I've run boot repair multiple times, but I still can't get past this screen.