While there are many disc wipers out there, these freebies have proven themselves very well. Google for KILLDISK or DBAN and follow instructions. One pass is enough but you can redo it again if you like.
I am going to be turning my PC over to the electronics recycling company in my area. But before I do that I want to wipe the hard drive of all data, os, etc. so that if somone acceses the HDD no personal info of mine will be "available".
My question-what is the best way to wipe a HDD clean of all data, os, etc?