A great program to monitor the temperature and health of your drive


Our rating: 


Pros & Cons:

Resident monitoring, alarm for temp and health, shows temp for each drive in system tray, S.M.A.R.T. and general info about internal/external hard drives, settings to adjust AAM /APM.
Must set it up to be a resident and to startup in the system tray for constant monitoring, no surface (block/sector) tests or S.M.A.R.T. tests.

Our Review:

CrystalDiskInfo is a great monitoring program that can warn you if the temperature and the health of your drive is deteriorating.

Its default temperature warning is set to 50 °C/122 °F which can be adjusted. It offers graphs of the accumulated S.M.A.R.T. information. It had no problems telling me almost everything about my external USB hard drive.

I like that it lists the Power On Count as well as the total Power On Hours. This is Open Source software. There is a portable version as well as an installer. Overall this is one of my favorites.

CrystalDiskInfo was reviewed by on


need to check if external drive Heath

every time I Failed To Initialize This Disk did test on disk got clean.