O&O DiskImage 21:
Backup Software for Windows

Version 21.0.1074 – released on 28.05.2025

Fixed:

• Changed drive mappings in FortressMode prevented license detection
• Shutdown or restart in FortressMode could trigger an error message
• Loading screen in FortressMode was too small

Info:

• Compatible with Windows 11 and Windows 10; x86, x64, and ARM architectures
• Available in German, English, French, Italian, Spanish, Russian, Japanese, and Simplified Chinese

Version 21.0.1073 – released on 27.05.2025

Added:

• When creating a boot medium, removable drives can now be selected immediately

Changed:

• In FortressMode, the application now opens in full-screen mode
• Closing in FortressMode allows an immediate restart or shutdown of the system.
• Opening the main application from the notification area has been improved

Fixed:

• Backup drives are now recognized as unreachable more quickly
• The handling of the exclusion list in drive backups has been corrected
• The notice about a parallel installation of the Professional Edition is now displayed after updates
• Invalid drives can no longer be selected during duplication
• The opening of the main application from the system tray application has been improved

Info:

• Compatible with Windows 11 and Windows 10; x86, x64, and ARM architectures
• Available in German, English, French, Italian, Spanish, Russian, Japanese, and Simplified Chinese

Version 21.0.1061 – released on 13.05.2025

Added:

• Integrated support for backing up individual files
• A splash screen now appears when the application starts
• O&O DiskImage Professional and Premium Edition can be installed side-by-side
• The installer now informs you if an existing O&O DiskImage Professional Edition is detected
• Selection list now includes *.avhd and *.avhdx files
• Orphaned tasks in Windows Task Scheduler are detected and removed

Changed:

• Revamped interface for managing backups
• The boot-media creation tool can now run only one instance at a time
• The backup-technology option is hidden when performing a file backup
• Boot-medium creation is no longer offered in Fortress Mode
• Backups are synchronized between the base system and FortressMode.

Fixed:

• Corrected calculation of the next scheduled backup time
• Special drive types (e.g., RAM disks) are now detected properly
• Deleting backup tasks in Fortress Mode no longer triggers an error
• Unrealistically high write speeds are now intercepted
• Corrected processed data size during file backup restoration
• Eliminated error messages caused by missing DLLs in FortressMode
• Corrected license management in FortressMmode

Info:

• Compatible with Windows 11 and Windows 10; x86, x64, and ARM architectures
• Available in German, English, French, Italian, Spanish, Russian, Japanese, and Simplified Chinese

Version 21.0.1031 – released on 16.04.2025

Changed:

• O&O Syspectr can now be integrated into the boot medium if needed
• The layouts of O&O BuildPE and O&O ShellConfig have been standardized and revised

Fixed:

• O&O BuildPE now starts in the preset language and respects the selected dark mode
• The creation of the boot medium has been corrected
• Reading files from VHD/VHDX backups has been corrected
• Occupied drives were not offered during cloning; now they are

Info:

• Compatible with Windows 11 and Windows 10; x86, x64, and ARM architectures
• Available in German, English, French, Italian, Spanish, Russian, Japanese, and Simplified Chinese

Version 21.0.1021 – released on 09.04.2025

First public version