I've contracted the "Hidden Folders" malware. It only affects my external drives. I ran unhide.exe to no avail, I tried a registry fix mentioned on MS support, and I tried running attrib -h -r -s /s /d j:\*.*
On the last one, it came back with 3 lines of messages, all saying Access denied: J:$Recycle.Bin yadda yadda yadda
Okay, I found the answer. Every site I went to mentioned only to click on "Show hidden files, folders, and drives." That's not enough. I finally found a web site that also said to uncheck "Hide protected operating system files"