wow very lousy to do it and reading, learn from me okay.... 1st find out the s/w software for your suitable HDD then start to do low lv format then raps/cover with cloth after that keep on knock until u hear so irretating steel sound then on that time u can look on ur clock write the satisfy time ..why do like tis...

1.) during u r still under warrenty going to be finished

2.) your HDD cluster or bad sector hv facing prob

3.) when your model is being obsolete, u will get a new and highest GB
E.g: today u bought 80GB warrenty 1 yrs or 3 yrs form now then after 11mth Xday quickly do your warrenty pls copy down your serial number and make sure get the right serial or newest serial not the olderest serial number.

you will get the new one and reliable for your storage