On my rpi3B+ running latest Raspbian update/upgrade I added 2 dirs /mnt/usb8gb and /mnt/usb128gb for my two flash drives. I then added these lines to /etc/fstab: /dev/sda1 /mnt/usb8gb ext4 defaults,nofail 0 3 /dev/sdb1 /mnt/usb128gb ext4 defaults,nofail 0 3 with the intention that they be mounted at...