I have an ASUS laptop that is set up as follows:

Screenshot from 2013-06-18 22_25_19_Resized.png

I want to carve out 80GB on the DATA partition , which is where I will install Kali Linux. Is it possible to do this just using the default options in the installer? I attempted to install Kali's predecessor Backtrack 5, and it totally borked my system. I am unable to make a backup, so I want to make sure I get this right the first time.

Oh, one last thing: Although the system has EFI, when I boot the persistent option from my USB stick, I get a message that says "Secure Boot Not Enabled." Will that cause me any issues during the install? Normally, I have never had issues installing Linux on the laptops I've owned, but then again, this is my first EFI-enabled laptop...