Taylor-Made, a dumb question, but by any chance do you have a flash drive of any sort mounted on your computer?

 

The reason that I ask is that a flash drive could take on such a Volume address. This could be either a temporary USB type of flash drive, or a hard mounted flash drive serving to boost your boot-up times.

Basically, there is nothing on the installation disks that writes to any specific volume other than C:.  (And that, just for a few instances of the install.)  So, if you are receiving a message about "Volume H" in the installation process, it is because something in your new Win 7 operating system sees a "Volume H" somewhere.

Can you access your Control Panel, and then "Hardware and Sound", and then the "Device Manager" to look and see if you have anything names as "Volume H" listed in your computer components?  Can you report back here with with you find?