Would like to stop constant parking of HD heads and clicking noise?

I unchecked the option put the hard disk to sleep whenever possible, but makes no difference. HD heads sound as if they are parking and engaging all too often, unless I am running a system constantly. The moment I step away, so to speak, and a few seconds pass, the click of the hard drive either parking or unparking is heard.

I did performance Update 1.0 after the problem was recognized. I did follow each of the steps in the link you provided, and it shows up in the console as successfully launched. But I did read on another forum where the way to install was very complicated, including using a /user/bin method, with many more steps....not sure it would mean anything more effective. As far as I can tell the hdapm was successfully launched. As I asked, is there a problem with it functioning with a Fujitsu HD? I uninstalled and reinstalled successfully, as per your link, but no stopping the head parking issue.
Anyone with other suggestions to finish with this problem? Short of having to buy a SSD? There must be a way to change the program by which these drive heads operate.

Which make and size HD do you have on your MBP?

When I recently bought my MBP I did a Time Machine transfer from my Imac during the initial startup assistant. I wonder if some setting from the Imac could have inadvertently transferred over as well, perhaps causing the settings for the HD to be either changed or trqnsformed in some way. Just a thought.

Did you use a Time Machine backup from another Mac when starting up the new computer? I am going to do an erase and install and work a little without transferring original setting and networks, and data from my Imac Time machine backup. If that works then maybe it was that. if the clicking conintues with constant heads on HD, then I will erase and install and backup again from Time Machine and try a fix with Apple support, though in the end I love the computer and don't want to exchange. Perhaps a HD swap or just gut it out and buy an SSD, and the heck with it.
I am in France and can return the computer within 15 days of purchase, so that's not a problem. But screen is great, fan not too loud, etc.

Is the clicking on and off of HD heads parking the only possible explanation for the noise, or could it be something else. If I buy an SSD drive, could the ping pong back and forth clicking continue because it turns out that it was something other than the drive heads constantly parking, etc?

tried hdapm and declunk but the slight clicking every 5 or 10 seconds perisists, except when I am in an application using it, or quickly moving from one internet site or link to another. when I stop for * seconds, the click occurs. then I tap on an application or icon, and the click occurs again, as if the drive is rengaged.
I don't mind putting in as SSd, just want to be sure that the drive is the problem here. Not something else.

Does your HD make the light but pretty constant clicking noise? I think there is a difference between the louder sound of the hard drive spinning down or changing directions, so to speak, and this clicking on and off which is constant. You idle the computer for more than 8 seconds, a click, you open an application, a click. Doesn't occur, for example when writing a document in order, or changing and clicking different internet sites at a quick rate, so as not to give the HD, I think, the time to park. This is only guessing on my part.
At first I thought it was linked with the touchpad tap to click, but it occurs while idling as well.