Defragging freespace doesn´t seem to work ! in Defraggler Discussion Posted 20 hours ago · Report reply You are looking for the Holy Grail, and making a common mistake of confusing 'defragmentation' with 'consolidation'. Defragmentation is intended to make each file contiguous, wherever they are located on the drive. Consolidation is intended to get all the different files in contiguous block. (Usually at the start of the drive). Modern defraggers will try to do the best they can for both, but you are still going to have 'holes' in the storage. In particular you will find that the Windows 'Pagefile' is usually in a fixed position somewhere up the drive and can't be moved, it may even be split into 2 or more parts. (Which can be consolidated but not easily). We say it's the Holy Grail because it's almost impossible to do, and even if you manage to get all your files in one block at the start of the drive that will change as soon as you start using it again, especially next time you install or update anything. I, and others here, content ourselves with defragmenting the files and not particularly bothering about where they actually are on the drive. As long as each file itself is contiguous then it won't (noticably) change the access speed no matter where they are on the drive. With an 8TB drive you'll find that's much faster than defragging the whole drive. With Defraggler run an Analyze, select 'View files', check or highlight the fragmented files, and 'Defrag Checked' or 'Defrag Highlighted'. PS. Defragmenting freespace attemps to do the opposite and get all the freespace contiguous (but still not consolidated), to do this it usually has to fragment some files. It will also take a long time (days?) on an 8TB drive.