Dualboot Gentoo & OSX, Boot Camp won't recognize partition

[The Iconoclast]

Please bear with me, my friend is doing most of the work with this install, and I'm only relaying what he's done so far. We have a bootloader partition on sd5, and root is sd6. sd5 is set to boot, no installation problems. However, when we start the computer and open up bootcamp (holding fn+alt/option), we only see my OSX partition.

[Coelacanth]

I think the boot partition needs to one of the first four partitions since bootcamp uses a GPT/MBR partition table hybrid.