When you delete a file, even without going through the recycle bin, the file is
not completely deleted from the hard drive.
In reality, only the indexing
information located in the allocation table and which provides access to the
sectors of the disk where the file is written are deleted. The data in the file
is still on disk.
Disk space is regained although data is still present on
the disk because the file system considers the file deleted as soon as the index
no longer exists. As long as the space used by this file has not been used by
another file, all data is recoverable. There are many utilities available to
restore an erased file by directly reading disk sectors. WinSesame (Pro version)
has a function for deleting these residual traces because, following an
encryption, it is important to thoroughly clean the hard disk of all traces of
old files in clear.
possible to use WinSesame to delete a file or even an entire folder without
leaving any trace on the hard drive:
In the WinSesame options make
sure that the Disk cleanup check box is checked and the number of passes at
least equal to 2. These are the default values of the program.
To perform a secure
erase of an entire file or folder, right click on it and choose WinSesame
Protection. Provide any password you don't have to remember and confirm it. The
file will be encrypted by WinSesame. The sectors formerly used by this file will
be perfectly cleaned by WinSesame. Then you just have to delete the encrypted
file without taking any special precautions because all the data that it would
then be possible to recover on the disk sectors or in the recycle bin is
encrypted and absolutely unusable.
up residual data on hard