I have USBHost Switcher installed and it has worked fine. (With a gender changer of course.)
So I tried a brand new 32 GB Kingston USB 3.0 thumb drive I just got. (Supposedly compatible with USB 2.0.)
Nothing. I get a warning that the USB drive was "unexpectedly disconnected." (A race condition? Too fast?)
It's formatted FAT32, with 16kb clusters from the factory. (If cluster size matters to the Nook.) But I can mount a 32 GB FAT32 card with 32 KB clusters, and I can mount an old 256 MB USB 1.0 thumb drive. So the problem seems to be following the USB 3.0 drive. Any thoughts about this and what I can do to get it to play?
Before I concluded that the problem is with the USB 3.0 flash drive, I had tried my Passport WD 1TB external drive as another test of USBHost Switcher. That drive had worked before, but in the meantime I had reformatted it to exFAT. Can't see it on the Nook HD+ anymore. (Bad experimenting. Changing too many variables at once.) I'm guessing not seeing exFAT is a kernel problem?
Sigh. I'm not doing too well here with external storage. I thought I was being smart when androidpolice announced an Amazon sale on this Kingston flash drive. But maybe there's a reason it was on sale?