missing how to show on lcd in PENTA SATA TOP hat used space on SATA RAID mount => /mnt/raid

Filesystem Size Used Avail Use% Mounted on
/dev/mmcblk0p2 28G 3.0G 24G 11% /
/dev/mmcblk0p1 510M 70M 441M 14% /boot/firmware
raid 654G 163G 491G 25% /mnt/raid