I have an intel server board S5520HC and 6 1TB sata drives. I am using the onboard embedded software raid to create a raid 10. When I load windows 2008 R2, the storage manager shows 743.17GB of unallocated space that I am unable to do anything with. If I try to extend the boot partition I tells me I am limited by Microsoft to 2TB. How can I use this unallocated space or am I stuck with it?