HDDScan is a comprehensive, free utility designed to help users diagnose, troubleshoot and repair hard drives. It provides a full suite of tools and functions that enable users to diagnose and repair their hard drive quickly and easily. The program includes a wide range of features such as diagnostic tests, drive performance monitoring, SMART attribute analysis, health report, temperature monitoring, and more. HDDScan can also be used to securely erase data and securely format disks. It supports most major operating systems, including Windows, Mac, and Linux. HDDScan is a great tool for users who want to ensure their hard drives are running properly and are free of any errors or issues.
CrystalDisk information is for SMART data only. HDDscan gives surface tests and smart data. Crystal is useful, but doesn't do that much.