Overview of Securely Delete Files wizard
The Incinerator erases data by overwriting it with random characters. Use the slider controls how many times data is overwritten; the higher the number of overwrites, the higher the security (and the more time the process takes).
Move the slider to the right to increase the number of overwrites; move it to the left to decrease the number.
The default value is to overwrite data three times. You can select to overwrite from one to ten times. (Help me choose.)
When you have made your selection, click Next to confirm your selections and run the incineration.