Constructive Lab Hard Disk Activity CL HAD is a small yet convenient program that allows you to monitor the activity of the hard disk or disks installed on the computer you are using. Once you have downloaded the installation file, begin the installation by double-clicking the CLHDA icon. Please read the terms and conditions carefully, if you agree with them confirm and continue. Once installed and started CLHDA appears in the top right-hand corner of your desktop. For each hard disk being used by the operating system separate CLHDA indicators are loaded. Every indicator has four components:
1. Information field.
2. Light indicator for activity.
3. Minimize button.
4. Terminate application button.
The information field displays the name of the hard disk. On its right side is the light indicator, which lights up green when the hard disk is in use, while the rest of the time it is black. The standard buttons 3 and 4 allow you to minimize or close the specific hard disk indicator. This is all there is to CLHDA.