The contents of drives and folders change. You can add new files, delete files that you no longer need, move files from one folder to another, or simply rename files.
To reflect all the changes you made, please select the previously cataloged disk or the folder you want to actualize and click the Update button on the toolbar or in the context menu.
The Update process will search for changes on the disk and update the catalog: WinCatalog will add files that have been added, it will remove deleted files from the catalog, and it will update files that have been modified since the last scan/update session.
If the drive isn't connected to your computer, before starting the process WinCatalog will ask you to connect the drive:
The update process is much faster than the initial scanning process because by default WinCatalog skips files that weren't modified since the last session.