After all my googling and all my research before beginning my bootcamp journey, I came to the conclusion that I would be forever unable to use my bluetooth keyboard to hold option at startup and bring up the choice of which partition to boot into. However, after stubbornly trying it a few times, I got it to work. I dont know if this has been working for a long time or if a whole lot of people know about it, but I do know a post like this would have saved me a lot of time before figuring it out on my own. For those who care, this is how i did it. I'm running late 2010 imac i7. 1. Have the computer turned off. Restart would work, im sure, but the timing would be harder. 2. Push the power button on the computer. 3. IMMEDIATELY after pushing the power button on the comp, push it on the keyboard so that the green light turns on and tap some buttons to get it to connect. (I used option..dont think it really matters, or actually if this step is necessary, but this is what ive been doing and its worked several times.) 4. Hopefully having accomplished this before the chime, press and hold option as soon as you hear the chime begin, and if you have the same luck I've been having, the dual boot menu will come up. Thank god i can put away the usb keyboard again. Like I said, I dont know if i sound like an idiot right now because everyone already knows this, but I felt an obligation to at least put it out there. Note: I couldnt get the mouse to connect the same way, but no biggy because you can use the arrow keys/enter to choose the partition.