I have connected a 2 TB USB 3 external hard disk to my Cubox i4 running Volumio 1.4 updated to get WiFi and Gui working properly.
The disk works OK when connected to a PC running Windows 7.
When I try to copy files from PC through the network files larger than aprox. 128MB can not be written to to the disk.
I can copy large files to the RAM disk without problem so the problem must be Vulumio/Cubox /USB 3 disk problem.