Completely delete all sensitive data and history from hard disk and make data unrecoverable to make the hard disk completely clean.
If you are getting rid of an old computer, selling or donating your old hard drive or just making a clean start for your hard drive again; it’s important to wipe hard disk clean and delete all your personal data from hard disk so that it can not be recovered again by another user. Doesn’t matter you have deleted all your personal files but still your data is there and is not gone forever as you might think. This collection of 5 free disk and history cleaner software will wipe all sensitive (and other) data from the hard disk and make it impossible to be recovered again. Use any one of these for the purpose. Caution: Some of these software will erase hard disk all data completely which will be unrecoverable from hard drive.