O&O Defrag Pro 专为Windows平台设计的专业碎片整理工具。

不仅拥有众多用户群体，而且屡获殊荣！新版本不仅在性能上显著提升，而且新型的Ribbon界面风格也给软件增色了不少。

它不仅支持本地磁盘的碎片整理，而且可以对USB存储设备比如U盘、SD卡进行碎片整理。

在整理过程中，O&O Defrag可以动态块形图片来显示碎片分布与整理进程。

它支持同时整理多个磁盘与磁盘分区、支持设定计划任务自动整理，如果你正在工作，它可以默默的在后台为你整理，你会在不知不觉中感觉到系统性能已经提升！O&O Defrag Pro 经典的五种磁盘碎片整理模式：1、Stealth（后台整理）：系统资源占用少，耗费时间长，适用于大文件较多且可用空间较少的磁盘；2、Space（空间整理）:速度快，整理效率高；此模式不会重组区块大小，意在提高剩余磁盘连续空间大小；3、Complete/Name(完整整理/按名称)：按文件名重新组织文件；适用于文件变动不大的磁盘；4、Complete/Modified：（完整整理/按修改时间）以文件修改时间排序来重组文件；意在提高磁盘写入性能；5、Complete/Access：（完整整理/按访问时间）按文件最后访问时间排序文件，意在提高磁盘读取性能。

O&O Defrag Professional Edition 21.1 Build 1211 (x86/x64) | 49.3 MbUp to 100% increased PC speed: There is nothing worse than when you want to do something on your PC and your computer is running slow. A disk defragmenter used regularly can speed up a PC of any age and get it working like new again! Don’t let a slow computer spoil your work or fun! Let O&O Defrag optimize your hard disks and you can experience speed increases of up to 100%! Regular disk defragmentation optimizes your PC performance!When you defragment, the files that Windows splits up when saving documents across the hard disk are logically put back together again so that files can be quickly recognized and found by the read and write heads inside your hardware. Speed increases of up to 100% are not uncommon, and your hardware suffers much less wear and tear!Operating System:Windows 7, 8/8.1, 10-