Hard Disk Sentinel (HDSentinel) is a multi-OS SSD and HDD monitoring and analysis software. Its goal is to find, test, diagnose and repair hard disk drive problems, report and display SSD and HDD ...

3. Unzip the file once it's downloaded. If macOS doesn't automatically unzip the file, click on it in "Downloads" and it should unzip. 4. Open the folder and run the "Sentinel-Release..." PKG file to ...