.AFR File Extension
AFF Disk Image Segment
| Developer | Basis Technology |
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What is an AFR file?
An AFR file is a segment file used by the Advanced Forensics Format (AFF), an open file format for storing forensic disk images. It contains a portion of a larger disk image created during a digital forensic investigation. When a forensic image is split into multiple files, each AFR file stores one segment of the image along with data needed to preserve the integrity of the original storage device.
More Information
Digital forensic investigators, law enforcement agencies, cybersecurity professionals, and incident response teams use AFF files to acquire and analyze evidence from hard drives, solid-state drives, USB flash drives, and other storage devices. The Advanced Forensics Format is designed to store disk images efficiently while supporting features such as compression, metadata, and integrity verification. Splitting an image into AFR segments makes it easier to store, transfer, and archive large forensic images across multiple storage devices or file systems.
AFR files work together with an accompanying .AFD file, which contains the primary segment of the image, and may also be accompanied by an .AFM file, which stores metadata, such as acquisition details and integrity information. Since each file is part of a standardized forensic imaging format, all related AFF files should be kept together so forensic software can reconstruct and analyze the complete disk image while preserving the integrity of the original digital evidence.
How to open an AFR file
You can open AFR files with PassMark OSForensics or Smart Projects IsoBuster. Since an AFR file is only one segment of a split Advanced Forensics Format (AFF) disk image, you should keep it together with the corresponding AFD, AFR, and, if available, AFM files before opening the image with forensic software.