Hi guys finally got most of the issues worked out on my Mac Pro 3.1 upgrade. I have Mavericks on one partition and Windows on the other for Boot Camp. My issue at the moment is relatively simple but after googling the heck out of it I can't seem to find a solution specifically for my issue. When I turn the computer on it defaults to windows. I plugged in a usb keyboard, restarted, held down ALT (options) and chose my OSX partition to boot and it boots fine. I went to disk startup, chose OSX and restarted. That's where the issue began. I had a grey screen for 20 seconds and the it booted to windows. While in windows I took the opportunity to go to Bootcamp (under control panel) and chose startup disk. In Windows it only shows the windows partition and not the Mac OSX. Not sure if thats relevant but when I click on the little black diamond and choose "restart in OSX" it reboots right back into windows again. Any ideas why?