1. Check your group id, use this command
syahal@redarix:/> id
uid=1000(syahal) gid=100(users) groups=16(dialout),109(vboxusers),33(video),100(users)
2. Add this line in /etc/fstab :
none /proc/bus/usb usbfs devgid=109,devmode=664 0 0
3. Login as root, mount all point in /etc/fstab :
redarix:/ # mount -a
4. Running VirtualBox, and mount your USB device from VirtualBox.
5. Finish.
