Question! How to check your HDD/SSD drive's health under linux.

Answer! First, install the SMART drive monitoring tool from a console or terminal. Just type the following command under any Ubuntu/Debian powered GNU/Linux distro:

sudo apt install smartmontools

Then run the following command from a terminal or console:

sudo smartctl -H /dev/sda

Note! Replace "sda" in the "/dev/sda" path by your desired target drive.