How Do I Erase Deleted Files?

Deleting files refers to deleting files from the operating system, and generally does not overwrite data on the hard disk. To delete files completely, use the software's shred function. Many softwares have the function of shredding files, such as 360, Kaka and so on. Take 360 as an example, open 360, in the advanced tool, select "file shredder", add the files you want to delete, [remember to mark ] and execute "shred selected files".

Delete Files

The deletion of files (deletion here refers to the delete function that comes with the operating system) is just to delete

conventional

Select, delete or right-click on the keyboard, move into the recycle bin, and empty the recycle bin

For stubborn files, you can create a new one next to it

Delete files "in use by other programs"

Problem performance:

In Windows XP system, a large-capacity AVI format file is prepared to be deleted, but the system always prompts that the deletion operation cannot be performed. There are other programs in use, even when you just boot into Windows system.

problem solved:

Method 1: Open Notepad and click the menu bar "File" "Save As". The name of the file is the same as the name of the file you want to delete (including the extension), and then replace it. At this point, just execute the delete command.

Method 2: Create a new folder in the same directory as the AVI file, and restart. Now, don't select the AVI file, first select the newly created folder, and then press Ctrl + the AVI file at the same time to perform the delete operation.

Method 3: Change the extension of the AVI file to any other invalid file type, and then perform the delete operation.

Method 4: One way to do it once and for all is to disable the media preview function of Windows XP, click "Start" "Run", enter: "CMD" and press Enter. Then in the "Command Prompt" window, enter: regsvr32 / ushmedia.dll

After confirming the operation with Enter, the preview function of the video file will be uninstalled. In the future, when you need to restore the video file preview function, enter: regsvr32shmedia.dll command in the "command prompt".

Method 5: Start the media player that played the AVI file and open another file. After that, try deleting again.

Method 6: Use winrar program to delete, right-click the AVI file, select "Add to compressed file" in the pop-up menu, and then select "Delete source file after compression" in the pop-up window "General" tab frame. After confirming the operation, perform the compression operation. Finally delete the compressed file.

Method 7: Call up "Windows Task Manager" and choose to end the Explorer process, but do not close the window at this time. At this time, a situation like a crash will occur. We switch to the "Applications" tab, click the "New Task" button, enter Explorer.exe and confirm the operation. After that, the desktop is back to normal, and then you can delete it.

Smartly delete "non-empty folders" or "bad files"

Problem performance:

Under WindowsXP (NTFS partition format), the specified file cannot be deleted either in the Explorer or using a third-party tool, such as deleting with TotalCommander, first prompting that the folder is not empty, and no response after confirmation. Even if I boot from a DOS disk and load a readable and writable version of ntfsfordospro, I can't delete it. The prompt says "bad file name", but I can see the folder.

problem solved:

The files that cannot be deleted in this case are most likely caused by long file names in NTFS format. We can use the 8.3 format to reduce the length or change some directory names in the path to reduce the length of the path. For example, you can temporarily rename some directories in the path, or use the 8.3 format in the command line mode. For example, the directory of "LinuxFaq" becomes 8.3, which is "LINUXF ~ 1". You can enter the directory through "Linuxf ~ 1", and then you can use the Del command to delete the specified file. If you need to delete a directory, use the Rd command.

Clever deletion of "specified program or file in use" files

Problem performance:

When deleting files, the system prompts the specified program or file in the pop-up dialog box and cannot be deleted.

problem solved:

Method 1: For such cases, we can solve the problem by ending the process related to pre-deleting files. So, how can you know which processes are associated with a given file? You can use WhoLockMe to find out. We run "Install.exe" to install the program first.

Next, enter the directory where the pre-deleted file is located, right-click the file, and select "WhoLockMe?" From the pop-up menu.

A "Lockers" window will pop up, in which we can know all the current processes calling the file.

After selecting the process name, click the "KillProcess" button to pop up the "Kill-Confirmation" dialog box, and then click the "Yes" button to confirm the end of the process operation. After finishing all corresponding processes, you can delete the specified file through the normal way.

Tip: In fact, this method is especially suitable for deleting Trojan horses. This very threatening little Dongdong can only be deleted after blocking all processes related to it.

Method 2: If the DLL dynamic link library file called by the specified program or file is not released in memory, it will also prompt that the file is in use when it is deleted. In this case, we can delete the system page file in the DOS environment. In Windows 9X, it is the "WIN386.SWP" file (located in the Windows directory of the system disk). In Windows 2000 / XP, it is the "pagefile.sys" file (Located in the root directory of the system disk).

Method 3: If the virus firewall is resident in the system, and it is checking the files you are trying to delete when scanning for viruses, then the system will also prompt that the files are in use. At this point, we just need to pause the real-time monitoring operation.

Cleverly delete other categories of strange files

Scenario 1: User rights issues prevent files from being deleted. If the current Windows user's login identity does not have permission to delete the specified file / folder (for Windows NT / 2000 / XP / 2003 operating systems), just log in as administrator again.

Case 2: Illegal characters prevent files or folders from being deleted

If the file or folder cannot be deleted due to illegal characters, you can enter the directory to delete the file in the "Command Prompt" interface, enter "dir> del.bat", and use the DOS pipeline command to automatically list the files in the current directory. Enter into the batch command file "del.bat", then modify the batch command file, retain only the file or directory name, and add "del" or "rd" before the file or directory name, and then run the batch command delete.

Case 3: Cannot delete any files in the system

Check whether the anti-removal protection software is installed in the system, and if so, delete it.

Still unable to make delete, what should I do?

If none of the above works, you can cut other files to another disk, and then format the disk.

other

If you want to completely delete a file (ie erase its data in the data area), it is recommended to use software. The principle is to create multiple temporary files on the same partition and delete (or read and write multiple times) to overwrite their data. This deletion method is a physical deletion, and there is no way to recover after the physical deletion. Suitable for very confidential documents. Regarding physical deletion and tombstone deletion, please refer to the encyclopedia of the term deletion, which will not be repeated here.