Dual boor problems


I own a acer v7 ... pretty good i think. But i like to start to program in linux but i don't want virtualbox anymore, it's not fast enough ....
But here is the problem i want like all of you to have ubuntu with the gnome dekstop. This laptop has UEFI and secure boot enabled. I've managed to get it working with those disabeled but that's not the way to go i think.
How do you install ubuntugnome in DUAL boot with UEFI and secure boot enableled ?


Not sure if this will help but I followed this guide and it worked perfectly on my laptop:

I'm not sure but i think you need to turn off secure boot in the bios. and you should be able to leave uefi on. again im not sure i have never dealt with it before.