Ok so I used bootcamp partitioned the drive and installed windows 10. Everything went fine however now I'm stuck on windows.. I get no option to chose my disk. I've tried holding every key configuration to get it to boot recovery.I can get into windows recovery but that doesn't help me at all. It will not boot to the USB I have because it formatted for mac. I was able to go to disk utility and see that my partition is still there I just can't access it. If anyone can help or at least lead me the way to formatting the disk and reinstalling os x that would be fine at this point.