How to mount usb stick on HDMU image?

[Antonio Rossi]

Hi guys!!!My question to you.I'm using a IPTV plugin(IPTV Player 53..)Entering in some channel appears to me:"There is no free space on the drive [/hdd/movie/]"I knew that for usb stick must format in EXT2!!!I have a pc with Windows OS.I formatted EXT2(usb stick)through MiniTool Partition.Should I create a label to usb stick?Should I create a subfolder?(movie)Could you explain to me the process step by step?How to mount usb stick on HDMU image?Thanks in advance!!! my box is Amiko Alien2 Triple+