I have this problem: I installed OS X and Windows in separate drives using Clover and set my boot order in BIOS to boot from the Clover/Mac OS X drive. However, whenever I boot the Windows install, somehow the BIOS is rewritten, and the windows boot manager shows up at the top of my boot sequence. I have to boot to BIOS, remove the windows boot manager from the boot sequence and reboot again to go back to Clover. Any ideas on how to fix this?