How to enable volume of a disk?

If I understand you correctly, you have free space after a volume on your hard drive and want to use that space to make the volume larger. Is that correct? Or do you want to make it larger with space on a different disk? Please be specific.

Either one can be done through the Disk Manager screen (Control Panel - Administrative Tools - Computer Management - tab Disk Management). Give more information and we will give more specific help.