hi, i am thinking of buying a new computer. i wish to sell my old one .if i delete everthing i want to how do i know that it is deleted and not stll on my system,like my banking details and personal details etc. any advise would be appreciated. many thanks charlton
Well the really only way to get rid of your sensitive data would be smash the hard drive with a lump hammer then throw into the fire...
However a little extreme and you'll also need a new hard drive.
Just deleting your information of the drive is not good enough as it can be recovered.
So the way to remove the data would be to format the drive. This is where all data is erased. You'll have to reinstall everything but the computer will be good as new. The data that you wish to be kept a secret will be still on the drive (actually there is no way of knowing if its still there). But for someone to go to all the trouble to retrieve this inforamtion, it would be quicker to rob your house. So a format is the best option.
You could also Zero Write to the drive and then format and reinstall everyhting. Just depends upon what you want to do.