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ULTRADEFRAG

An Open Source Defragmenter

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The term UltraDefrag is a shorthand for the Ultra Defragmenter and holds no connection with potential owners of registered trademarks or other rights. All trademarks, brands, and names are the property of their respective owners.

UltraDefrag is an open source disk defragmenter for Windows. It can quickly defragment everything including files which are usually locked by Windows. For instance, UltraDefrag can re-join paging and hibernation files.

NEWS

UltraDefrag 6.1.0 has been released [2015-04-19]

This release features completely rewritten documentation. A bit later it will be included in UltraDefrag v7 along with a bunch of bug fixes. If you believe some information is missing there, don't hesitate to drop us a note.

 

AVAILABLE INTERFACES

 

FEATURES

  • Simple but efficient defragmentation algorightms.
  • Defragmentation of NTFS metafiles and streams.
  • Optimization of NTFS master file tables (MFT).
  • Automatic hibernation or shutdown after the job completion.
  • More...

 

SYSTEM REQUIREMENTS

Desktop: Windows NT 4.0, 2000, XP, Vista, 7, 8

Server: Windows NT 4.0, 2000, 2003, 2008, 2008 R2, 2012

32-bit, 64-bit and Itanium Editions