Steps to take before installing opensuse to dual boot with windows 8.1???

I just installed opensuse on a old pre-uefi laptop. it dual boots with windows7.

and I want to do it again on newer uefi toshiba L840d laptop. i tried twice last year to install kubuntu on the toshiba but i got only problems. the grub boot choice window doesn't come at boot and it just boots straight into windows 8.1 or if try, into kubuntu, but no choice is given. plus i had other problems. Like this guy

can someone please give me directions to prepare my uefi laptop for installing opensuse??

i can give more details if you want.