I often plug and unplug my external 2TB hard drive to add more files (as the device isn’t always seen on the network by windows), via the rear USB
It always takes a long time to compile, but I can usually see the folders.
This time it sees the USB device name in the list (alongside a memory stick in the front and my ReadyNas)
However it says there are no media files on the 2TB drive and won’t browse into it.
30 mins later, whilst playing a movie from the front USB, I finally connect via Windows and can only see the front USB.