Our WHSv1 file server is almost full, so I took an USB HDD that was lying around (ie: I was using it on another computer, data and partitions are there), and I went to the WHS console to add it to the storage pool.
Surprisingly, the disk does not appear in the list, but if I connect via RDP, i can access it.
What's the problem? Does the disk need to be partitionless or unformatted to be added?