lsblk-f
udisksctl mount -b /dev/sdb1
cd /run/media/mnisho/HD-ADU3
udisksctl unmount -b /dev/sdb1
sudo lsof /dev/sdb1
kill PID
or
kill -9 PID
Plug the USB
lsblk -f
mkdir ~/usb_mount
sudo mount /dev/sdc1 ~/usb_mount
Unmount the USB
udisksctl unmount -b /dev/sdc1
or
sudo umount ~/usb_mount