I have a large folder (~20GB) containing a rather large amount of old archived files (~400K). I only need one though. What would be the easiest way, if possible, to only extract the file I need rather than sitting forever and a day for all of the files to load (if that's even possible)? Right now the folder is sitting on my external hard drive. I also have the original 7zip archive - not sure if that would be easier to extract from.