I have a Samsung Galaxy S4 (GS4) and S3 (GS3). Trying to move files an external Toshiba drive. I had problems writing to the Toshiba, but was able to find solutions in this forum and it is working now. I think. When I attach my GS4 to my RaspberryPi 3b, it shows up as: mtp://[usb:001,008]/ or somet...