Currently it is not possible to display the health % value on the tray icon.
However, Hard Disk Sentinel automatically assign a symbol (green tick mark, yellow exclamation mark, red X) to the current health value and it is possible to
- display this health symbol only (instead of the temperature)
- display both this health symbol and the temperature (alternating)
To do this, please open Configuration -> Thresholds / Tray Icon page.
There you can
- enable displaying of this health symbol for the different health levels (excellent, fair, bad)
- adjust the threshold values for these health levels
- disable display of the temperature on the icon
By default, if the health decreases below 25%, Hard Disk Sentinel automatically displays the red X / temperature value alternating to increase attention.