Optimize your HDD and you can experience speed increases of up to 100%

O&O Defrag Pro

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O&O Defrag Professional 22.0 (32-bit)

  -  24.2 MB  -  Trial
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 O&O Defrag Professional 22.0 (32-bit).


For those interested in downloading the most recent release of O&O Defrag Pro 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 O&O Defrag Professional 22.0 (32-bit)

  • O&O Defrag Professional 22.0 (32-bit) Screenshots

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    O&O Defrag Professional 22.0 (32-bit) Screenshot 1
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  • O&O Defrag Professional 22.0 (32-bit) Screenshot 3
  • O&O Defrag Professional 22.0 (32-bit) Screenshot 4
  • O&O Defrag Professional 22.0 (32-bit) Screenshot 5

What's new in this version:

- SSDs store file fragments spread across many blocks, even though much fewer would suffice.
- This memory behavior has an immediate effect on the performance and lifespan of an SSD. To counteract wear and at the same time to optimize the performance of SSDs, O&O Software has developed the new defragmentation method SOLID. By using the defragmentation method SOLID, these distributed file parts are defragmented so that in the future significantly fewer memory cells have to be read out and also written to when changing a file. As a result, the SSD is faster as the number of read and write accesses is reduced by the defragmentation. In addition, the premature wear of the SSD (and of course the conventional hard drive) is prevented because fewer blocks need to be erased and rewritten than before the defragmentation with SOLID. To stay with our example above: To read our sample file, it is not necessary to first access and read 32 different blocks, but only a single one.

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