TuneUp Utilities - 2011 User Manual download pdf (Page 76)

Recycle Bin

1. Select Recycle Bin.

This option shows you the Recycle Bin, so that you can empty it. You receive information on the

number of files it contains and the amount of disk space taken up by the Recycle Bin. You can also dis-

play the content before deleting it.

2. Click Show contents.

You receive information on the size of the Recycle Bin and the number of files it contains. To ensure

that there are no important files in the Recycle Bin, you can display the content before deletion takes

place.

The Delete allocated free disk space option overwrites the reserved free space of files in the Recycle

Bin, thereby increasing security of deletion.

3. Click Next to confirm your selection.

You can now select the desired deletion method (seeDeletion Methods, p. 76).

Deletion Methods

TuneUp Shredder provides the following three deletion methods that differ in terms of length of deletion

and security of deletion. Each of these deletion methods can be increased by repeating the deletion process.

Note however, that the deletion process then takes longer.

Fast deletion

Files will be overwritten with a single character. The original text of the files will be replaced with endless col-

umns of a certain letter.

Secure deletion in accordance with DoD 5220.22-M

A procedure developed by the United States Department of Defense (Regulation DoD 5220.22-M) will be

used. Prior to deletion, the files are overwritten with special data patterns multiple times, destroying the orig-

inal contents so effectively that even expensive examinations of the magnetic structure of the disk in a spe-

cial laboratory would not allow the data to be recovered.

Secure deletion, Gutmann method

This method, named after its inventor Peter Gutmann, overwrites the files to be deleted 35 times with ran-

dom values in a special pattern and then deletes them. This method is considered the most secure way to

delete files with software, but also takes the longest time.

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TuneUp Utilities - 2011 User Manual Page 76