Active@ Hard Disk Monitor - Version 23.0 Active@ Hard Disk Monitor is a freeware disk utility that monitors the status of your hard drives and scan for bad sectors. The system is based on the Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.). This software monitors hard disk parameters such as Temperature, Head Flying Height and Spin-Up Time and notifies a user when a critical condition occurs. Disk Monitor also displays hard disk information, current S.M.A.R.T. attributes and the overall status of the hard disk's health. Advanced disk scan allows you to detect bad sectors on a disk surface. The software can be launched automatically at Windows startup and monitor the system in the background. An icon in the System Tray can display the temperature for selected HDDs.