Virus Damage Recovery: Restoring .DD Files

Have files been deleted due to a user’s error or software error? Have you formatted a disk by accident and need to know how to recover the files? Read our .DD file recovery guide for Windows, MacOS, Android and IOS in 2024.

Virus Damage Recovery: Restoring .DD Files
Data Recovery Tool

What is a .DD file?

Compressed file archive created by Macintosh DiskDoubler for Mac OS Classic; uses the LZ78 compression algorithm; compresses files in place on the hard drive, which are expanded on-the-fly when opened; compressed automatically in the background using AutoDoubler.

What Are Common Causes of ".DD" Files Lost or Failure?

There are several common causes of ".DD" files being lost or experiencing failure:

  1. Accidental deletion: Users may accidentally delete ".DD" files while organizing or cleaning up their computer system. This can happen due to human error or mistakenly selecting the wrong files for deletion.
  2. Software or hardware issues: Issues with the computer's software or hardware can lead to ".DD" file loss or failure. This includes system crashes, software conflicts, disk errors, or hardware malfunctions.
  3. Virus or malware attacks: Viruses or malware can corrupt or delete ".DD" files as part of their malicious activities. These attacks can occur through email attachments, malicious websites, or infected external storage devices.
  4. Power outages or sudden system shutdowns: Abrupt power outages or system shutdowns can interrupt the saving or writing process of ".DD" files, leading to data loss or file corruption.
  5. Formatting or partitioning errors: Mistakenly formatting or partitioning a storage device can result in the loss of ".DD" files. This can happen when attempting to reformat a drive, resize partitions, or create new partitions.
  6. Physical damage or data corruption: Physical damage to storage devices, such as hard drives or USB drives, can cause ".DD" file loss. Additionally, data corruption can occur due to aging hardware, improper handling, or exposure to extreme conditions.
  7. Software or system updates: Occasionally, software or system updates can cause compatibility issues with existing ".DD" files, resulting in file corruption or loss.
  8. Human error: Human error, such as accidentally overwriting ".DD" files, improper file transfers, or incorrect file manipulation, can lead to data loss or failure.

To minimize the risk of ".DD" file loss or failure, it is important to regularly back up important files, use reliable antivirus software, maintain a stable power supply, and exercise caution when handling or managing files.

How to recover lost ".DD" files?

Sometimes while working with a computer, laptop or other stationary or mobile devices, you may encounter various bugs, freezes, hardware or software failures, even in spite of regular updates and junk cleaning. As a result, an important ".DD" file may be deleted.

Go to view
🧺 How to Recover Files and Folders After Sending Them to the Recycle Bin and Deleting? (Windows 11)

🧺 How to Recover Files and Folders After Sending Them to the Recycle Bin and Deleting? (Windows 11)

By no means should you think that the only way to recover a ".DD" file is always to create it once more.

Use programs for recovering ".DD" files if a file was lost after accidental or deliberate deleting, formatting the memory card or the internal storage, cleaning the storage device, after a virus attack or a system failure.

Programs to recover ".DD" files

Looking for a way to get files back? In cases when files were deleted and they cannot be restored by using standard operating system tools, use Hetman Partition Recovery.

Partition Recovery™ 4.9
The tool recovers data from any devices, regardless of the cause of data loss.
Download

Follow the directions below:

  1. Download Hetman Partition Recovery, install and start the program.

  2. The program will automatically scan the computer and display all hard disks and removable drives connected to it, as well as physical and local disks.

    File Recovery Software

  3. Double-click on the disk from which you need to recover ".DD" files, and select analysis type.

    Hetman Partition Recovery - Analysis Type

  4. When the scanning is over, you will be shown the files for recovery.

    Hetman Partition Recovery - Files that Can be Restored

  5. To find a file you need, use the program’s interface to open the folder it was deleted from, or go to the folder "Content-Aware Analysis" and select the required file type.

    Hetman Partition Recovery - Deep Scan

  6. Select the files you have been looking for and click "Recovery".

    File Recovery Software - Files List for Recovery

  7. Choose one of the methods for saving the files and recover them.

    Saving recovered files in Hetman Partition Recovery

How to open file with ".DD" extension?

Looking for how to open a stereo diskDoubler Archive image file file?

Programs that open ".DD" files

Windows
File Viewer Plus File Viewer Plus
Smart Projects IsoBuster Smart Projects IsoBuster
Mac
The Unarchiver The Unarchiver

Additional Information

  • File type: DiskDoubler Archive

  • File extension: .DD

  • Developer: Symantec

  • Category: Compressed Files

  • Format: Binary

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Comments (1)

  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 18.12.2019 14:14 #
    Leave a comment if you have any questions about Recovering lost .DD files after deleting, cleaning or formatting!
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Vladimir Artiukh

Author: Vladimir Artiukh, Technical Writer

Vladimir Artiukh is a technical writer for Hetman Software, as well as the voice and face of their English-speaking YouTube channel, Hetman Software: Data Recovery for Windows. He handles tutorials, how-tos, and detailed reviews on how the company’s tools work with all kinds of data storage devices.

Oleg Afonin

Editor: Oleg Afonin, Technical Writer

Oleg Afonin is an expert in mobile forensics, data recovery and computer systems. He often attends large data security conferences, and writes several blogs for such resources as xaker.ru, Elcomsoft and Habr. In addition to his online activities, Oleg’s articles are also published in professional magazines. Also, Oleg Afonin is the co-author of a well-known book, Mobile Forensics - Advanced Investigative Strategies.

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Questions and answers

  • What is the file extension .DD and what type of file is it typically associated with?

    The .DD file extension is typically associated with disk image files. These files are exact copies of a disk or partition and can be used for various purposes such as data recovery, forensic analysis, or software testing. Disk image files with the .DD extension contain the complete contents and structure of the original disk or partition, including files, folders, and even deleted data.

  • How can I open a .DD file and what software or tools are commonly used for this purpose?

    A .DD file is typically a disk image file, and it can be opened using various software or tools. Here are some commonly used options:

    1. FTK Imager: FTK Imager, developed by AccessData, is a popular tool for forensic analysis. It allows you to open and examine disk image files, including .DD files. FTK Imager is available for Windows, macOS, and Linux.
    2. Autopsy: Autopsy is an open-source digital forensics platform that supports the analysis of various disk image formats, including .DD files. It provides a user-friendly interface and is compatible with Windows, macOS, and Linux.
    3. EnCase: EnCase Forensic is a widely used digital investigation software. It supports the analysis of disk images, including .DD files, and provides advanced features for forensic examination. EnCase is available for Windows.
    4. X-Ways Forensics: X-Ways Forensics is a powerful forensic software that allows you to open and analyze disk image files, including .DD files. It offers a comprehensive set of tools for digital investigation and is compatible with Windows.
    5. OSFMount: OSFMount is a free disk imaging software that can mount disk image files, including .DD files, as a virtual drive. Once mounted, you can access the contents of the disk image using file explorer or any other software. OSFMount is available for Windows.
    6. VirtualBox: VirtualBox is a virtualization software that can be used to mount and access disk image files, including .DD files. By creating a virtual machine and attaching the disk image, you can explore the contents of the image. VirtualBox is compatible with Windows, macOS, and Linux.

    Remember, when working with disk image files, it is important to maintain the integrity of the original image by working on a copy or using read-only mode in the forensic software.

  • Are there any specific considerations or precautions to be aware of when dealing with .DD files?

    Yes, there are several considerations and precautions to be aware of when dealing with .DD files:

    1. File Size: .DD files can be extremely large, often exceeding several gigabytes or even terabytes in size. Ensure that you have enough storage space to handle these large files.
    2. Data Integrity: .DD files are bit-for-bit copies of the original source, including empty space and deleted files. It is crucial to maintain the integrity of the original file during and after processing. Any modifications made to the .DD file should be done on a separate copy, not the original.
    3. Forensic Analysis: .DD files are commonly used in digital forensics for evidence preservation and analysis. If you are dealing with a .DD file as part of a forensic investigation, ensure that you follow proper forensic procedures, such as using write-blocking devices to prevent unintentional modifications.
    4. Compatibility: .DD files are typically created using specialized forensic imaging tools. Ensure that you have the necessary software or tools to work with .DD files. Some common tools include EnCase, FTK Imager, and ddrescue.
    5. Validation: It is essential to validate the integrity of the .DD file after creation or transfer to ensure it is an accurate copy of the original source. Hashing algorithms like MD5 or SHA-256 can be used to verify the integrity of the .DD file.
    6. Security: Since .DD files can contain sensitive information, it is crucial to handle them with care and maintain strict security protocols. Limit access to authorized personnel and ensure proper encryption and protection of the files to prevent unauthorized access or data breaches.
    7. Storage and Backup: Due to the large size of .DD files, it is advisable to have a proper storage and backup strategy in place. Consider using redundant storage systems or cloud-based backup solutions to prevent data loss.
    8. Legal Considerations: If you are dealing with .DD files as part of a legal case, consult with legal professionals to ensure compliance with relevant laws and regulations regarding evidence handling and chain of custody.

    Remember, working with .DD files requires technical expertise and an understanding of the potential risks involved. If you are unsure, it is recommended to seek assistance from professionals experienced in handling forensic images.
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