O&O Defrag 17 Product manual

O&O Defrag 17 
Features at a glance

Features at a glance

Besides the continuous maintenance and enhancement of the existing program components, you will find several additional new and helpful features in O&O Defrag .

Lifetime Performance Statistics

You can now see in detail the lifetime performance statistics of O&O Defrag, from the moment you bought the program to the current moment. These statistics show you just what O&O Defrag is doing for your PC, and exactly what it has already achieved so far!

Deletion of free space

Deletion of free space for increased protection of privacy. O&O Defrag 17 lets you overwrite free space to make sure data you previously deleted can never be recovered. O&O Defrag not only increases your computer’s productivity but protects your data from unauthorized access. All that in just one program!

Thin Provisioning

Optimize systems with Thin Provisioning. This feature enables O&O Defrag 17 to reduce and optimize the actual memory usage of virtual machines and drives on SANs. The main attraction here is the combination of this new feature with defragmentation. Let O&O Defrag automatically prevent storage overload and unwanted disclosure of data after every defragmentation!


Thanks to clearly displayed statistics, you can tell what effect a regular defragmentation is having on your system and you can track the success over weeks and months.You can monitor how many files have been optimized and how many excess file fragments have been put back together.Based on this, you can then adjust your settings to match the defragmentation to your computer habits in order to get the best possible results.

Defragmentation summary

The new defragmentation summary shows the difference a defragmentation makes; after each defragmentation run you will be shown the drive's allocation before and after optimization by O&O Defrag.

Live Update: Automatic updates to most recent program versions

The live update feature helps you make sure you are always working with the most current version of O&O Defrag.No re-registration or manual installation required: O&O Defrag handles this all for you.

Simplified user interface

The user control was adapted to the most frequent application cases, so that the most important jobs will be executed intuitively. All basic control possibilities, as well as the unique functions of O&O Defrag can be accessed with just one click.

QuickStart wizard of O&O Defrag

The QuickStart wizard allows you to automate defragmentation with just a few mouse clicks right after the first start of O&O Defrag or at a later time. Once defined, you will never have to worry about the optimization of your hard disk again. Everything will be handled by O&O Defrag in the background. The default settings we propose are adapted to the needs of most our customers.

O&O ActivityMonitor

The O&O ActivityMonitor periodically determines the system load. It controls the performance demand of O&O Defrag during a defragmentation and adapts it to the current state. You can thereby work undisturbed while your system is being defragmented in the background.

Thanks to the automatic optimization in O&O Defrag, there is no need to manually schedule defragmentation runs. This feature is activated automatically after installation and optimizes your hard disk in the background; without your computer losing any of its performance.

Advanced report management

The report function lists the defragmentation reports in date order and groups them according to their age. In that way, you will always stay informed on the performance development of your computer over time.

Optimization for all makes of Solid State Drives (SSDs)

For the first time, O&O Defrag enables you to optimize all makes of SSD drives. Using regularly scheduled ATA TRIM commands, an SSD will be kept informed of those hard disk areas that are available for new data. Instead of continuing to save the contents of data that’s no longer needed, the SSD can now use those freed areas for a drive-internal optimization of its data management. As a result, the SSD is able to process accesses significantly faster, and wear out on flash chips is kept to a minimum.

Filing drives into zones

The division of drives into zones enables the logical separation of the data into performance critical and non-critical files. A special algorithm makes sure that the data on the disk is optimally organized after defragmentation. Files are organized and moved into zones depending on their intended use and the access frequency. For instance, system and program files, which need to be accessed very quickly, are separated from other data like documents and downloads. By the division of files according to their write frequency, it’s possible to intelligently prevent fragmentation. Thanks to this logical grouping, program and system start times are shortened, future defragmentation runs faster, and new fragmentation can be prevented.

Three adapted optimized methods for defragmentation

Three methods - Optimize, Optimize/Quick and Optimize/Complete - facilitate the selection of the most beneficial defragmentation for a specific purpose. These new methods group your data into zones and combine optimally with the older O&O Defrag methods. These are, of course, still available whenever you disable zone filing.

Additional strategies to reduce fragmentation

Very large files with high-levels of fragmentation can also be efficiently packed together into a few fragments. The result is clearly measurable.

Compatible with Windows 8

O&O products are always kept up to date with advances in technology. That’s why O&O Defrag has been developed and optimized for Windows 8: to guarantee you best results. And, of course, older systems using Windows Vista and XP will go on being fully supported.

Further properties

  • Default configuration already optimal for the majority of users
  • File Status provides an overview of the largest and most heavily fragmented files on your drive
  • Defragmentation of individual files and folders by right-clicking
  • Control O&O Defrag from the task bar
  • Three new (eight in total) defragmentation methods for an optimal increase in speed
  • ClusterView for detailed information on the distribution of files in the drives
  • O&O Screensaver
  • Power management for notebooks
  • O&O ClusterInspector for targeted inspection of hard disk regions
  • Job assistant to schedule automatic and periodic defragmentations
  • Status reports in HTML format to keep track of developments in performance
  • Support of removable drives (USB Sticks, Memory Cards, etc.)
  • Execution of Windows commands (Batches) before and after defragmentation
  • Screen saver mode automates defragmentation whenever the computer is idle
  • Checks for new program version