Hello Done4lyf, and welcome to Seven Forums.
Is this a data drive that you are wanting to format?
Have you already backed up anything else on the hard drive that you don't want to lose?
If so, then you should be able to open the Computer window, right click on the hard drive, and click on
Format. You'll want to format it as a
NTFS drive.
Format a HDD or USB
Hope this helps,

Shawn