mkaplan519 wrote:
If you go into disk management and change the drive letter of the drive that is currently listed as G to something else, G will then be available for you to assign to the current H drive.
That was the problem. G was not listed as being used, and the letter was not available to use. After going back and forth to Disk Management several times, a G drive showed up, so I renamed it to Z. That made G available. That Z drive doesn't show up in This PC, though.