Many times, my boot drive disappears from the BIOS, and hence prevents the PC from booting to Windows. It is not regular but I can't find a pattern when it would happen. They're attached to the Intel ports, and even tried moving them to other ports and swapping cables, sometimes its fine, sometimes they don't appear. I can't use the Marvell ports since I got this board for the eSATA ports, w/c share w/ the internal SATA ports.
Currently at the latest F7, but it happened since the I got the board w/ F5.