A powerful and simple disk defragmentation system tool for Windows

UltraDefrag

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UltraDefrag 4.3.0 (64-bit)

  -  343.6 KB  -  Open Source
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of UltraDefrag 4.3.0 (64-bit).


For those interested in downloading the most recent release of UltraDefrag or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download UltraDefrag 4.3.0 (64-bit)

  • UltraDefrag 4.3.0 (64-bit) Screenshots

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    UltraDefrag 4.3.0 (64-bit) Screenshot 1
  • UltraDefrag 4.3.0 (64-bit) Screenshot 2
  • UltraDefrag 4.3.0 (64-bit) Screenshot 3

What's new in this version:

GUI:
- The ability to resize the main window has been added.
- Text and controls are now scaled to the current DPI settings of the screen.
- Cluster map customization is possible now through guiopts.lua configuration file editing.
- Update check was added.

Driver:
- One little bug preventing the root directory from being defragmented fixed.
- Few bugs preventing the correct MFT displaying were fixed.
- Driver was improved to better distinguish between free space and MFT zone.
- One little bug preventing displaying system files in green color on NTFS volumes was fixed.

Boot time interface:
- Progress indication was improved.
- Backspace and escape keys handling added to the interactive mode.
- Few bugs were fixed.

Command line tool:
- --wait option was added to make scheduled defragmentation more flexible.
- --use-entire-window option was added.

Scheduler:
- UltraDefrag Scheduler has been retired as a component less functional than standard Windows Task Scheduler; visit http://ultradefrag.wikispaces.com/ for tutorials on scheduling disk defragmentation tasks through Windows Task Scheduler.

Translations:
- The following translations were updated: Czech, Finnish, Japanese, Spanish (AR), Portuguese (BR), Korean, Hungarian.

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