Diskpart saying no space

[Guest TechSupport]

I have a Proliant DL380 G4 with 4 72.8 GB drives in it. I added 2 more

drives and expanded the array. In the HP array configuration, I have 164705

MB of unused space but don't see this in disk management.

When trying to use diskpart in normal mode, I get error message the

specified disk have less than 1 MB of free space available. The volume I

chose has 34 GB of free space while the other volume (not chosen) has 11 GB

free. How can I get diskpart to work?