When to Use It?

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You should use overwriting every time when removing data from your drive. You do not need to overwrite data, which you do not think is secret, or sensitive, but there is no harm in overwriting everything.

However, there are some special cases when overwriting may not be suitable, or may have side effects. These cases are discussed in the next chapter.

You may also want to erase the unused disk space on your drive regularly to get rid of the remains of temporary files created by applications and other information that may have been stored on your disk. You can use the Scheduler to conveniently set this procedure to happen when you are not using the computer, at nights for example.