Storage medium naming rules
The device supports one flash memory and one USB disk. The name of the flash memory is flash:. The name of the USB disk depends on whether the USB disk is partitioned:
If the USB disk is not partitioned, its name is usba0:.
If the USB disk is partitioned, the partitions start at 0 and increment by 1.
For example, the first partition of the USB disk is named usba0:, and the second partition is named usba1:.