Why can I only create 1 2TB volume in Windows 2008 R2?

Question

I have a Dell 2950 with 6 1TB SAS drives in a RAID 5 array, when I created the array I was informed it would be split across 2 connectors (connector 0 connector 1). I went ahead and thought I'd extend the volume in Windows but I can't.

I'm left with 1 2TB partition and 1 2.7TB partition (plus a 80GB Windows partition), I can create a simple volumn on the 2TB partition but I'm unable to extend this on to the 2.7TB partition. I can't do anything with the 2.7TB partition, when I right click it I have no options available, they are all greyed out.

Where does my problem lie? Thanks

Solution

Sounds like the 2.7Tb partition was created as GPT/EFI. Check out this FAQ at Microsoft for more info.

if you want to change that partiton you'll probably need to use the DiskPart utility. More info on that here at Microsoft