I've been seeing discussions about RAIDs and the 2TB limit on the partitions. Could it possibly mean a 2TB VOLUME limit? I have two machines with two different controllers, both with a 2.7TB RAID 5 set (4x 1TB config). Unfortunately in one array, one drive dropped out and when it rebuilt, I had one single volume instead of two volumes (2TB and 750GB). From what I've seen, that should not be a problem, if I understand it right. However on both machines I can not access that last .7 of a TB. Its listed as unallocated, and all options are grayed out. On machine A, I was using the RAID5 as a boot drive with Win7. On machine B, the RAID5 is a secondary drive. I thought perhaps the MBR was limiting it on machine A. I don't know how to install Win7 using GPT and it will only let me create a 2TB partition, can not create a second 750GB partition either, as I mentioned earlier. Is this an MBR or NTFS limitation?