Take advantage of free space

My disk drive has over 528 GB, but I use less than 10% of that. Ie would be easy to just copy the fragmented files to the first free space that has enough room. If you want to make a second pass to move down some of the files where there is now enough free space to jold them that would be fine also. If you wanted to add a compress option, you could move them all to the end of the disk and back to front of disk.