After cataloging a drive, write the catalog name on the physical label. For example, if your catalog is named PHOTOS_2015_HDD1.efc , write "PHOTOS_2015_HDD1" on the external case. This connects the digital index to the physical object.
Let's be honest: EF File Catalog looks like it was designed for Windows 98. The interface is basic, using standard tree views and list panes. EF File Catalog