I've got a Crucial M4 SSD and a WD Caviar Green 2TB HDD. Windows 7 boots quickly on the SSD but it boots even faster (around 5-10 seconds faster) if I unplug the 2TB HDD. Why is this does anybody know? Could it be because they are both plugged into the same controller and the HDD is somehow bottlenecking speed? (Marvell 6GB/s) I haven't tried using the HDD on the other (Intel) controller by the way.