Original title: system defrag some files didn't defrag mesg.

Please provide additional information about your system:What is your system make and model?What is your XP Version and Service Pack?The defrag reports lists files that cannot be defragmented - is that what you are talking about and what are the names of the files?If you are running low on disk space the Windows defragmenter may have difficulty defragmenting your hard disk. XP needs 15% of the total hard disk capacity to run properly (you would get an informative message if you don't have enough room).The XP defragmenter cannot defrag files that are in use (like the registry files, event logs, pagefile.sys, etc), so they may show up as fragmented files in the defrag report. These files must be defragmented before XP loads up all the way and starts to use those files.On a healthy system it is certainly possible to have zero fragmented files (according to the XP report) by using PageDefrag. It does not always mean you will suddenly see more free space on your HDD though, so don't let your expectations exceed reality when you get to zero defragmented files and still have no more free space.You can read about and download PageDefrag download here:http://technet.microsoft.com/en-us/sysinternals/bb897426.aspxHere is an example of such a report showing zero fragmented files I ran on my system:Defrag ResultsVolume (C:) Volume size = 37.26 GB Cluster size = 4 KB Used space = 12.70 GB Free space = 24.56 GB Percent free space = 39 %Volume fragmentation Total fragmentation = 0 % File fragmentation = 0 % Free space fragmentation = 0 %File fragmentation Total fragmented files = 0 Total excess fragments = 0 Average fragments per file = 0.00Pagefile fragmentation Pagefile size = 1536 MB Total fragments = 0Folder fragmentation Total folders = 3,918 Fragmented folders = 0 Excess folder fragments = 0Master File Table (MFT) fragmentation Total MFT size = 94 MB MFT record count = 31,444 Percent MFT in use = 12 % Total MFT fragments = 0--------------------------------------------------------------------------------Fragments File Size Files that cannot be defragmentedNoneThere are many free third party defragmenters you can download from the Internet. Some folks like the other tools better than the built in XP defragmenter, although you can see from the report above, the XP defragmenter is certainly capable of a result of zero fragmented files.If you need help understanding your XP defrag report, save it to a text file and post it back here (like I did mine).Here are some examples of third party tools that you can investigate:Some people like the Piriform suite of products and their Defraggler application which you can get here:http://www.piriform.com/Some people like the Auslogics suite of products and their defragmenter application which you can get from here:http://www.auslogics.com/en/Do, or do not. There is no try.I need YOUR votes and points for helpful replies and Propose as Answers. I am saving up for a pony!