Yes, I know, this is the WORST question ever...I feel like a dumbass, especially because there's a howto that isn't even on the forums, it's a site link, but I'm confused and don't want to mess up when partitioning. I have two drives, a C and a D and I live boot Backtrack 4 Final off a flash drive. Simple stuff. Recently I decided I want to install the amazing OS and when it comes up to partition, it wants to write to the "entire drive", which I can only assume is both C and D. I only want it to write to D.

tl;dr how can I make Backtrack 4 final install to only one of my hard drives and take up all of the available space?