Data recovery software freeware - Clearing data from hard drive

Data recovery software freeware - Clearing data from hard drive 

Clearing data from hard drive 
Question:I am planning to sell my laptop (Toshiba Satellite 2800 series, about five years old) and want to know how I go about wiping out my hard drive of any personal information. I've been told that just reloading the operating software (Windows XP) will do this, but I want to know for sure.
Source: www.philly.com

How to wipe out data from old hard drive 
Iam planning to sell my laptop (Toshiba Satellite 2800 series, about five years old) and want to know how I go about wiping out my hard drive of any personal information. I've been told that just reloading the operating software (Windows XP) will do this, but I want to know for sure.
Source: feeds.baltimoresun.com

Recover lost files from a wiped hard drive 
So you've accidentally wiped your hard drive clean, and you're worried that you'll never see your precious collection of music and pictures again? Linux.com is here for you, with a pretty detailed...
Source: lifehacker.com

Wiping out hard drive needs some software 
Q. I am planning to sell my laptop (Toshiba Satellite 2800 series, about five years old) and want to know how I go about wiping out my hard drive of any personal information.
Source: www.ocregister.com