O&O Defrag 28 
ModernUI

O&O Defrag offers a new and modern interface that makes it very easy, especially for PC beginners, to carry out the important optimization measures. The ModernUI allows for the easy implementation of important optimization measures. The extensive classic interface is retained for the previous professional users.

The modern view offers compact access to all important functions as well as additional components. For example, the operating system can be checked for inconsistencies, installed apps can be displayed, or temporary and superfluous files can be deleted.

Drive list

Analyze your drives
1. Select the drive you want to have analyzed from the list of drives.
2. Start the Analysis.
3. Depending on the size of the drive, the analysis can take some time.

Defragmenting your Drives
Defragmentation is a useful tool for optimizing performance on both HDDs and SSDs, but for different reasons.

1. Select the drive you wish to defragment from the drive list.
2. Clicking the Start button in the Ribbon Bar will start defragmentation using the SPACE default method. If you want to change this method, open the Start button's lower menu and select the Method you desire.
3. Depending on the size of your database, defragmentation can take up to several hours. You can see the defragmentation in Status and the task tray.

Check & Repair

A system analysis and check, with the option of having any inconsistencies and errors corrected automatically. O&O Defrag checks your hard drive or SSD for inconsistencies that can lead to problems. The component memory and the Windows system files are checked for errors. After the check is complete, O&O Defrag will show you whether and which errors were found.

Most errors can be corrected directly with the repair function.

Checking and Repairing the Windows Recovery Environment in O&O Defrag
Another core component of the Check & Repair feature in O&O Defrag is the checking and repairing of the Windows Recovery Environment. This special environment is crucial for troubleshooting and restoring your system in case of serious issues, such as boot errors that prevent Windows from starting normally.

The Check & Repair functionality includes specific routines for verifying the integrity of the Windows Recovery Environment. It checks whether the recovery environment is correctly configured and free from errors that could impair its functionality. Should any issues with the Windows Recovery Environment be identified, O&O Defrag offers the option to automatically repair them. This includes restoring damaged or missing system files, correcting configuration errors, and ensuring that the recovery environment is up to date and fully operational.

Uninstall

Programs that are no longer used can pose a security risk. They are definitely wasting disk space. You probably won’t need a 2011 tax return program anymore. But do you even know it’s still installed?

O&O Defrag clearly shows you all installed programs. And with one click, you can easily uninstall the ones you no longer need. This saves storage space (important for SSDs) and increases your security.
In a clear display, O&O AppBuster shows which apps are installed on the computer - even hidden apps are also displayed. O&O AppBuster makes it possible to remove unwanted apps quickly and easily. Or, if one of these apps was accidentally uninstalled, it can be restored with one click.

Cleanup

Over time, more and more ballast accumulates on a PC. Temporary files, internet cache and the like can take on considerable proportions. This can lead to a storage space problem, especially on modern SSDs. And backups also take much longer than is actually necessary.

With the improved O&O DiskCleaner in O&O Defrag you put an end to files that are no longer needed.

Data analysis

Data analysis: Allows an analysis of which data types are stored on the data medium and thus helps to find memory hogs that can be eliminated.

Automatic defragmentation

The automatic optimization is executed in the background without slowing down the computer's performance. Here, special methods for monitoring the system activity are used, so that an optimal use of the system resources is guaranteed. The automatic defragmentation optimizes your data volumes in the background without the performance of your computer being adversely affected. O&O Defrag can be configured so that defragmentation starts automatically when a certain level of fragmentation is reached, on certain days of the week, or whenever your screen saver is active.

O&O IntensiveOptimize

This mode restarts the system into a maintenance mode in which O&O Defrag can run undisturbed and fully develop its optimization potential. The Intensive Optimization (O&O IntensiveOptimize) is the fastest and at the same time most comprehensive optimization for Windows disks to date. A separate and exclusive instance of Windows is started, in which only O&O Defrag runs and can therefore not only exploit the maximum system performance for optimization, but also have access to all files at the same time. Regardless of whether these are system files or files exclusively locked during Windows operation.

BitLocker Support in O&O IntensiveOptimize
O&O Defrag is enhanced by the integration of BitLocker support into the O&O IntensiveOptimize mode. BitLocker, a disk encryption technology available in many versions of Windows, poses an additional challenge for the defragmentation and optimization of drives. Encrypted drives typically restrict access and the capabilities of optimization tools, as they are unable to read or modify the encrypted contents.

With BitLocker support, O&O Defrag overcomes this challenge by safely interacting with encrypted drives without compromising the security or integrity of the data. Before starting the IntensiveOptimize mode, O&O Defrag automatically detects if a drive is encrypted with BitLocker.