The Hitatchi HTS543216L9A30 is a 160GB Hitatchi Travelstar hard drive.
@ The Prophecy: thanks a lot for responding....
I would certainly be laughing at myself if this is true and it is my own hard drive... because i have been a lot scared so it would be a relief. The situation seem scary since what brought it to my notice is the little usb icon at the lower left hand corner of my menu bars...you know, like the ones that appear to show you when a flash drive or other is connected and you can eject it after use!!!.... this is exactly how this usb icon behaves it provides an eject option so you see my plight.
Can you say what procedure I can use to determine if this is really my hard drive?
I feel better already though thanks so much for your brotherly care.