Hi, Stuart, This sounds very interesting! Please keep us posted on your results. I was using the "Use Tools That You Already Have" method of solving the problem, but this sounds ideal! Cheers, Richard On 2021-01-15 7:09 a.m., ROBINSON Stuart wrote: > One method I am coincidentally testing just now is using quickhash-gui > > https://www.quickhash-gui.org/download/quickhash-v1-5-6-for-windows/ > > I can use this to select a drive or folder, then scan and hash every file, when it has finished you can right click on the list to "Show only duplicates" then right click again to export that selection to a CSV file, it shows name, path, file size, and file hash. > > It can take a while to scan but it seems very good so far from my testing. > > Best, stuart > -- Richard L. Hess email: [log in to unmask] Aurora, Ontario, Canada 647 479 2800 http://www.richardhess.com/tape/contact.htm Track Format - Speed - Equalization - Azimuth - Noise Reduction Quality tape transfers -- even from hard-to-play tapes.