There were some people on this forums who were stating that if you have OSX + Windows on a same or separate drives installed and also have a software raid running in OSX, Windows will not boot and will require a separate SATA or Raid PCIe card to solve the issue. Im happily reporting that it is not the case with new 2010 MPs. I have dual boot SL + Win7 64 installed on my 180GB SSD and 3x2TB drives in raid 0. Everything is operational so dont waste money on unnecessary expansion cards before purchasing your new MP.