If you want to know how to delete files permanently, then read ahead. The very first thing you going to need to realise is that when you delete a file, it is still on the computer. Absolutely nothing is deleted initially. With Windows, the deletion process is particularly complex and even more so with Windows Vista.
When you delete a file it initially goes into the recycle bin where you can retrieve it at any time afterwards onto you empty the recycle bin. When you empty the recycle bin, however, the file is not retrievable by normal means. However, it is still on the computer.
Just a note of caution, some additions of Windows Vista also come with a feature called shadow copies where certain documents are backed up on a regular basis and may be restored at any time. This feature works completely separately to the recycle bin.
When you have emptied the recycle bin, the computer’s file-system basically places a zero over the first unit in the header of the file, telling the computer’s file-system that it is free space. Now although this is now classified as free space, something actually has to overwrite it to effectively permanently delete the file and all the data within it.
Because of this, there are a number of programmes that you can download and purchase of the Internet which essentially allow you to have a good chance and recovering deleted files, even from a computer which is had the hard drive entirely formatted.
If you have sensitive information on your computer, then it is essential to delete files properly. There are plenty of programs available that can do this but there is no such feature that automatically comes with the Windows operating system. Deleting files permanently does require a third party programme but these are usually cheap and effective.
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