I just installed Vegas Post, with Vegas Pro 20, and when I try to open or save a file the only hard drive that shows up is my C: drive, even though I have two other internal hard drives that show up as expected in Windows Explorer (Windows 10). (My USB drive also shows up when plugged in.) I tried my old Vegas Pro 14 and see it has the same problem, though I don't remember having that problem back in the day when I used it regularly. I can't find anything in preferences to specify what hard drives should be checked and used by Vegas. What am I missing?