'Unallocated' disks. What do I do with them?

I have just installed two new 2Tb HDs.

In Computer Management/Storage/Disk Management I was asked to choose between MBR and GPT. I chose MBR.

I now have two 'Unallocated' disks, which I can't 'see' in My Computer.

So, what do I do next to make them allocated(?) and visible in My Computer?

Many thanks.

D.

You need to make a partition on each HD.
Partition or Volume - Create New - Windows 7 Forums