AVG PC TuneUP 2013 PCT13N12EN003 用户手册
产品代码
PCT13N12EN003
A V G P C T uneU p © 2 0 1 2 C opyright A V G T ec hnologies C Z, s .r.o. A ll rights res erved.
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Fast deletion
Files will be overwritten with a single character. The original text of the files will be
replaced with endless columns of a certain letter.
replaced with endless columns 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 original contents so effectively that even
expensive examinations of the magnetic structure of the disk in a special laboratory
would not allow the data to be recovered.
5220.22-M) will be used. Prior to deletion, the files are overwritten with special data
patterns multiple times, destroying the original contents so effectively that even
expensive examinations of the magnetic structure of the disk in a special 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 random 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.
deleted 35 times with random 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.