The copying data to another partition and back? Yes, and it works too, because when you do the second copy phase shifting all the data back, it gets written back unfragmented by default It's not really tedious, you just do 3 things (copy, format, move) instead of one thing (defragment), and it should be faster too, especially if the spare partition is on a seperate physical disk One warning though, if it's an NTFS drive you want to do this do, make sure you use a spare NTFS partition if you want to keep permissions etc. Plus I'm not too sure how well it'll work on encrypted files unless you use a user that's designated a recovery agent or something on that machine Safest for FAT32 though or if you don't care about file permissions