Identifying differences between two folders

Question / Problem

I just copied a folder with a lot of files inside to another location. How can I check that no files were missed or corrupted during the process?

Answer / Solution

You can use the duplicate search of the file search that is integrated into TreeSize for this use case.

Please open the duplicate search and select both the source directory, as well as the destination directory, as search paths.

In the "Duplicate Search" ribbon, you can choose "Unique files" and use it in combination with the (default) comparison method "File Content". Now, when running a duplicate search, instead of finding all duplicate files, only files that do not have a duplicate file are shown in the result list.

If no files are found, it means every file has a duplicate and this indicates that the copy operation worked fine.