When you are getting rid of your computer simply deleting files is not enough.
When you delete a file it is not erased from your HDD the disk just makes the space available for rewriting. Anyone can make use of recovery software to recover the deleted data. Here are three ways to ensure that the data that is gone is gone.
• The File-by-File method:
If you are giving your system to one of your friends then you always want that the files should be deleted and the software should remain intact. The best way to do this is by the use of a data-shredding program.
• The Whole Drive Method:
Completely reformatting your HDD looks a better solution but still the information can be easily restored using off the shelf data recovery software. Use software like DataEraser which completely overwrites the data on the HDD. The process is a lengthy one but can be used to completely change the contents of your HDD.
• The Power Tool Method:
Using software to completely erase data is good but still the best way is to render the drive unusable. Wear some eye protection gear and then use your power tools to drill four holes through the platters or another option is to open the top lid of your drive and go to the platters with an angle grinder. Scuff the platters till all the shine on them is gone.
Via: popularmechanics
