I recently installed a 2nd HDD from an older computer I wasn't using and it worked fine but there is something else on my computer and I don't know what it is. It appeared on my computer when I put the extra drive in so obviously it has something to do with that drive.

What is it and what can I do with it?

Why is it there?

Can I get rid of it?

(new HDD =#1 other thing=#2)

by the look of it the new hard drive may have been partitioned into 2.

if nothing is on the hard drive you need delete the partitions and format the drive.