How to find and eliminate duplicate files on your Windows systems.

1. Select Drive

When you run DupeFF.exe, all available drive letters will be listed down the left side - choose one.

2. Select a Folder

You can search entire drives, or select a specific folder. Whatever you select will be searched entirely including all sub-folders.

3. Select a File Type

You can search for any file type. If you want to select ALL files (all types),
click the last type "*" listed. Or select any other type by entering the extension where the "*" is. To select any excel spreadsheet type, enter "xl*" (it will find xls, xlsm, xlsb, etc.)

4. Click the #4 Enumerate File List button

The program will list all the files in finds based on the criteria you previously provided. By default, the final report text file will be "Tab Delimited". If you prefer, click on the "Commas" check box.  Also by default, only the first 64K characters of files are actually hashed. Again, if you desire, check the "Hash Full File Content" instead.

5. Hash all enumerated files

 Click the #5 "Hash Enumerated File List" button. When complete, it creates a "txtx" text file. Note, the extra x. You probably won't have a "txtx" associated with a program, as it can be very large file. If it's a small file, let notepad open it, else open it with wordpad or word. You can also import it directly into Excel but in the end no matter where it is, we want to place a full copy into the clipboard.

6. Open DupeFF.xlsm

Once open, review the information on the "Instructions" tab. Taking the steps recommended, you'll be able to preview duplicates and once you're convinced duplicates are REALLY duplicates, you can easily delete even thousands of them in seconds.

EE allows me to attach the spread sheet  "DupeFF.xlsm"  that I use in the video, but not the program. For those who'd like a copy of the DupeFF.exe program or its Delphi XE2 source code, please contact me directly:
ed(dot)covney(at)gmail(dot)com.
 DupeFF.xlsm