I'm doing a test install of F16 in a virtual box VM. I'm trying to simulate the conditions on my hardware where I will not be able to create the 1 MB boot loader partition. It is not an issue of size but an issue of order. I would have to create it at the end of the disk.
The installation documentation says this partition is recommended not required, but I have found no way in two attempts to circumvent anaconda's insistence to create one.
I would do without a boot loader (grub2) and grab grub to install in rescue mode if I could get past anaconda.