The difference between "delete file" and "smash file"

Important confidential documents in the computer, press "Shift+Del" to delete it completely safely? After we install some anti-virus software, we usually have a "File Shredding" option in the right mouse button. Is it different from our usual file deletion? How to play the role of "smashing" documents?

Differences and Functions of "Delete Files" and "Crush Files"

What is the use of deleting and shredding? When should I delete it? When should it be crushed? In short, after deleting a file, when we find that the important data is deleted by mistake, we can restore it in some way, and the shredding file is irreversible, and it completely removes the file data from the hard disk partition. Will not be able to recover, such as some special privacy files do not want to be restored by others (such as borrowing someone else's U disk to copy things), you can take the "file shredding" method to "destroy the file."

; "Delete files" and "Scrush files" methods and principles

File deletion

There are two types of Windows delete files: One is normal deletion, that is, we select After the file, press the Delete button on the keyboard or select the "Delete" option in the right mouse button. Ordinary deletion is just to put the file in the recycle bin, any deleted files can be restored in the recycle bin, which is equivalent to accidentally deleting the file, you also have "regret medicine" to eat;

The other is completely deleted, That is, after selecting the file and pressing Shift+Delete, the deleted file will not be moved to the recycle bin and deleted directly from the hard disk partition.

But whether it is to delete the file normally, delete the file completely. If we do not read or write the hard disk partition after deleting the file, the file data information is still "reserved" in the hard disk data area. Therefore, files that have been completely deleted can be easily recovered by some hard disk management tools or data recovery software (such as EasyRecovery).

File Shredding

As the name implies, the files on the computer are completely deleted without leaving any traces. This can be done using some file shredding tools.

File shredding and direct deletion of files are not the same, this is from the Windows file system. The Windows file system includes FAT systems such as FAT12, FAT16, and FAT32, and NTFS file systems. In the FAT file system, if you create a file, you need to open an "allocation table" on the disk, just like the library's bibliography. This table includes a pointer to the address of the contents of the file. The file is then read and written by the system at the address pointed to. At the same time, if other files are to be created, they are forbidden to point to this address in case the file is garbled. It is much more convenient for the operating system to delete files: it is ok to directly destroy the "bibliography". The address pointed to by the "bibliography" is considered to be empty. The data in the computer is composed of binary and appears as "concave" and "convex" on the disk. Since the system cannot predict the details of the file to be deposited, the contents of the file can be considered random. As can be seen from the mathematical knowledge, the "0" and "1" in the disk have no effect on the speed of rewriting the information.

Our information may be detected by uninvited guests, and the entire file, or part of the file, can be re-established based on clues on the disk to spy on our privacy. That is very bad for us. Therefore, the concept of "file shredding" has been made.

"File shredding" is to delete the content and "bibliography", so that the content of the file is unknown to anyone. And the general file shredding software can delete the historical records in the tools such as Word and WPS and the temporary files created by the system, so that no one can know our privacy.

Delete powder operation

In daily office applications, unnecessary files are always deleted directly, and when you find the accidental deletion, you will call for help, so you may wish to start Put the deleted file in the recycle bin and confirm it before deleting it. Right-click on the "Recycle Bin" icon on the desktop, select "Properties" to open the Properties dialog box, and make sure that "Show Delete Confirmation Dialog" is selected in the "Global" tab, so that each time you delete it, you will be prompted to delete the file into the Recycle Bin. Even if you find the file deleted by mistake, you can go to the recycle bin to select the file and restore it. For the current operation, even if you press Ctrl+Z directly, the deleted file will be back.

For some documents that are not needed, if you don't want others to recover by some means, you can directly "broken" them. If you have the Rising Anti-Virus package installed on your computer, right-click on the file (clip) you need to smash and select “Crush File” to open the file shredder window. If you need to smash other files, drag and drop them into the shredder window. , click "Start" to start crushing.

Nowadays, many anti-virus software integrates similar functions, and the principle is basically the same. In addition, you can choose some more professional file shredding tools.