How to delete files in MS-DOS without a prompt
By default, MS-DOS and the Microsoft Windows command line will not prompt a user or give a user a prompt or warning when deleting files on a computer using the del command. However, when attempting to delete a directory using the del, deltree, or rmdir command, ensure that it isn't empty or you will receive a warning or error.
When deleting anything from MS-DOS or the Windows command line, it is not sent to the Recycle Bin.
Deltree command
To suppress prompting, use the deltree command with /y, as shown in the example below that deletes all files in the Windows temp directory.
deltree c:\windows\temp\*.* /y
The above command does not work in all versions of Windows and MS-DOS.
If this command does not work, we would recommend you create a batch file with the following command in the batch file.
echo y | del %1\*.*
Once created, type the name of the batch file and then the name of the directory you want to delete.
Rd and rmdir command
Users who want to delete a directory containing files in a Windows command line version 2000 or later can also use the rmdir or rd command with the /S option.
Erase command
If you're running a later version of Microsoft Windows and using the Windows command line, use the erase command to delete files without a prompt as an alternative.