Delete factory installed vcd

I recently purchased a WD external hard drive.  On the drive was an installed WD drive and program (665mb) from the factory.  I do not want this drive as it not useful to me (and the space that it takes up can be used for other more important info) or the programs and directories that it contains. 

It will not allow me (as administrator on my personal pc) to delete it or to reformat it?  What gives? I do not want this and yet it appears that I am stuck with it?

How can I delete the vcd (or can I and if not then how can I disable it?) or reformat it and get rid of it?

If I was aware that this hard drive contained this factory installed drive (and it was such a problem to get rid of) I would not have purchased it…

this is pretty old, dunno if it works ?