UltraDefrag是一套體積小，沒有華麗的外表，執行效率高的磁碟重組工具。UltraDefrag的特點：採用核心驅動模式，重組效率加。
簡單、明瞭的圖形介面。其重組的速度相當快速，使用微軟的應用程式介面，支援所有微軟的檔案系統（FAT12/FAT16/FAT32/NTFS/UDF）。以html模式輸出重組的結果。支援64位元系統。

UltraDefrag is powerful Open Source defragmentation tool for Windows NT. 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.

解壓密碼：wanmp
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