Skeletons on your hard drive

Tax records, resumes, photo albums--the modern hard drive can keep increasingly larger volumes of information at the ready. But that can turn into a problem when it comes to effectively erasing the devices. There are a number of options for cleansing the drives of unwanted computers, from special wiping software to destruction services to manufacturers' recycling programs. But what many PC owners don't realize, experts say, is that these methods are often not enough.