I recently tried to install Ubuntu (64bit) onto my Lenovo y510p. I partitioned 150GB of space, created a UEFI boot device with my flash drive, and was able to load into a live version of Ubuntu. My problem comes when I get to the install screen where it asks how it should install Ubuntu (by erasing the current disk, installing alongside, etc...). It doesn't give me the option to install alongside Windows. I tried the "try something else" option and attempted to select my free space partition but it said there was no root device and told me to fix it in the partition menu. I then read somewhere that Lenovo computers cannot run both operating systems alongside each other (it wasn't clearly worded but that was my interpretation).
While I'd like to say I know my way around a computer this is my first time attempting to dual boot, and have little idea what I'm doing.