TerraMaster F4-424

[Enquiries]

I have set up the NAS f4-424 and have it connected to the network and have set up the volumes and started to move files into a PLEX folder but every time I have o shut it down to adjust hardware I am getting notification about abnormal shut down. I am holding the power button down until it goes dark but is there a better way to shut it down? Also is there a way to move the TOS software from one of the Hard Drives to on of the NVMe M.2 drives?

Thank you,
Brian