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UltraDefrag is powerful Open Source defragmentation tool for Windows. It is very fast, because the defragmenting is done by kernel-mode driver.

They are three interfaces to them: graphical, console and native. The GUI is very useful, because it represents your filesystem visually as a color coded cluster map. The console is another option for those that prefer the command line. It is also allows you to run UltraDefrag from the task scheduler and scripts. Finally, the native executable will run at boot time in a manner similar to chkdsk.

The design of UltraDefrag is very simple. There are no skins, localization, or animations. It is a small and powerful program!

Features of UltraDefrag 3.2.0 :

· Very fast defragmentation, the work is done via a kernel mode driver which has an optimal defraging algorithm.
· Very small engine written in pure C.
· Nice graphical interface - compact and functional.
· Safety, because the file moving is accomplished with Microsoft's own Defrag API.
· Simple to use.
· Ability to generate html reports of fragmentation status.
· Ability to include/exclude files based on simple filters.
· Native x64 support.
· Free: Distributed with full source code under the GNU General Public License.

What's New in UltraDefrag 3.2.0 :

· Ultra Fast NTFS scanning feature was added, NTFS analysis becomes approximately 25 times faster now
· defragmentaion of additional streams attached to NTFS files was added
· information about trash (temporary files) excluded from reports, statistics and cluster map; these files are completely ignored now
· lot of new options were added to the console program
· the \??\ sequence removed from file names in reports
· Thai translation was made
· some important parts of handbook were completely rewritten
· Scheduler was rewritten in C language; NET framework is not required now!
· ability to translate Scheduler into foreign languages was added
· GUI options were moved from udefrag-gui.cmd script to easy to understand guiopts.lua file
· debugging information will not be saved on disk since this version of the program; read carefully an appropriate chapter of program's handbook for detailed instructions about kernel mode driver debugging instead
· few fatal driver bugs were fixed
· driver's reliability was increased
· now UltraDefrag requires less software for its development
· FOR PROGRAMMERS: build configurator was rewritten in Lua
· NOTE FOR PROGRAMMERS: to successfully recompile the driver run configure.pl script and click 'Apply patch to MinGW' button once again