Features - O&O Software GmbH

For an error-free and stable Windows system

O&O Check&Repair is an integral part of O&O Defrag and ensures the automatic inspection and repair of your drives. The feature detects file system errors, corrupted structures, and inconsistencies that can affect the stability and performance of your Windows system. Through thorough analysis, problems are detected early and reliably corrected – even before data is lost or applications unexpectedly smear. This keeps your system stable, secure, and responsive over time.

Automatic detection of file system errors

Finds corrupted structures, erroneous entries, and inconsistent file system areas
Provides secure analysis of all connected disks

Reliable drive error repair

Fixes found errors automatically or, if desired, manually
Improves stability and reliability of the entire system

Data loss prevention

Early detection of critical errors that could lead to data loss
Ideal for preventive system maintenance and long-term data security

Optimized system performance with error-free drives

An intact file system ensures faster access and more stable behavior
Prevents performance degradation due to damaged sectors or faulty structures

Transparent diagnostic reports

Shows detailed information about problems found and repairs performed
Gives full control and comprehensibility when making technical decisions

Seamless integration into O&O Defrag

Perfectly matched with defragmentation and system optimization
Part of O&O Defrag 30 – for maximum stability and performance

Supports all common drive types

Compatible with HDDs, SSDs, NVMe and external drives
Works on modern versions of Windows without additional software

Easy to use

Intuitive interface with clear results
Also ideal for users with no prior technical knowledge