How to Recover .CISO Files Lost in a Critical System Error

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 .CISO file recovery guide for Windows, MacOS, Android and IOS in 2025.

How to Recover .CISO Files Lost in a Critical System Error
Data Recovery Tool

What is a .CISO file?

CD or DVD disc image image container format designed for efficient storage and distribution of CD/DVD images; contains an exact duplicate of data from the original disc, without unnecessary "junk data."

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

There are several common causes of ".CISO" file loss or failure:

  1. Accidental deletion: Users may accidentally delete ".CISO" files while organizing or cleaning up their storage devices.
  2. File system corruption: File system corruption can occur due to various reasons, such as improper system shutdown, hardware failure, or malware infection. This can lead to the loss or corruption of ".CISO" files.
  3. Software or hardware issues: Issues with software or hardware components involved in the creation, storage, or retrieval of ".CISO" files can cause failures. This includes problems with the ISO creation software, storage devices, or the computer's operating system.
  4. Virus or malware attacks: Viruses or malware can infect and corrupt ".CISO" files, making them inaccessible or causing data loss.
  5. Physical damage to storage media: Physical damage to storage devices, such as hard drives or flash drives, can lead to the loss or corruption of ".CISO" files stored on them.
  6. Improper file transfer: If ".CISO" files are not transferred correctly, such as interrupted or incomplete transfers, it can result in file loss or corruption.
  7. Human error: Human errors, such as accidental formatting of storage devices, incorrect handling of files, or improper use of ISO creation tools, can lead to ".CISO" file loss.
  8. Power outages: Power outages during the creation, storage, or retrieval of ".CISO" files can cause data corruption or loss.
  9. File system errors: File system errors, such as disk errors or bad sectors, can prevent the proper functioning of ".CISO" files and result in failure.
  10. Incompatible software or hardware: Using incompatible software or hardware to create, open, or extract ".CISO" files can cause failures or make the files unreadable.

It is important to regularly backup ".CISO" files and take preventive measures, such as using reliable storage devices, maintaining updated antivirus software, and practicing safe file handling, to minimize the risk of file loss or failure.

How to recover lost ".CISO" 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 ".CISO" 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 ".CISO" file is always to create it once more.

Use programs for recovering ".CISO" 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 ".CISO" 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™ 5.0
The tool recovers data from any devices, regardless of the cause of data loss.
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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 ".CISO" 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 ".CISO" extension?

Looking for how to open a stereo compact ISO File image file file?

Programs that open ".CISO" files

Windows
Wii Backup Manager Wii Backup Manager

Additional Information

  • File type: Compact ISO File

  • File extension: .CISO

  • Developer: N/A

  • Category: Disk Image Files

  • Format: Binary

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Comments (1)

  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 18.12.2019 16:11 #
    Leave a comment if you have any questions about Recovering lost .CISO 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 meaning of .CISO file format and what type of file does it represent?

    The .CISO file format is a compressed ISO disc image file. It represents a copy of the contents of an optical disc, such as a CD or DVD, in a compressed format. The CISO format is commonly used for storing and distributing disc images, as it reduces the file size while maintaining the integrity of the original data.

  • How can I open a .CISO file and what software or tools are required for it?

    To open a .CISO file, you will need to use a specific software or tool that supports this file format. Here are the steps to open a .CISO file:

    1. Download and install a software or tool that supports .CISO files. One such tool is "CisoPlus" which is a Windows-based utility.
    2. Once you have installed the software, launch it.
    3. Within the software, click on the "Open" or "Browse" option to locate the .CISO file you want to open.
    4. Select the .CISO file and click on the "Open" button.
    5. The software will then extract the contents of the .CISO file and display them for you to access.
    6. You can now view and use the contents of the .CISO file as needed.

    It's worth mentioning that .CISO files are compressed ISO files used in the gaming industry, primarily for PlayStation Portable (PSP) games. Therefore, the software or tool you choose must specifically support .CISO files.

  • Are there any specific steps or procedures to follow when trying to open a .CISO file, and what are the potential risks or challenges associated with it?

    To open a .CISO file, you can follow these steps:

    1. Ensure you have appropriate software: You need a program that can handle CISO files. The most popular choice is "CisoPlus" or "PowerISO." Make sure you have one of these installed on your computer.
    2. Install the software: Download and install the CISO software from a reliable source. Follow the installation instructions provided by the software provider.
    3. Open the CISO file: Once the software is installed, right-click on the .CISO file you want to open. From the context menu, select "Open with" and choose the CISO software you installed. Alternatively, you can open the CISO software first and then navigate to the .CISO file using the software's file explorer.
    4. Extract or mount the file: After opening the .CISO file, you can either extract its contents to a specified location on your computer or mount it as a virtual drive. The extraction or mounting options will be available within the CISO software.

    Potential risks or challenges associated with opening a .CISO file include:

    1. Malware: There is a risk of downloading a malicious .CISO file from untrustworthy sources. Ensure you obtain the file from a reputable and secure source.
    2. Compatibility: Some CISO software may have compatibility issues with certain operating systems or versions. Ensure you have the appropriate software version for your system.
    3. Corrupted files: If the .CISO file is corrupted or incomplete, it may not open properly or cause errors during extraction or mounting. Try obtaining the file from an alternative source or ensure the file is not damaged.
    4. Legal considerations: Opening a .CISO file that contains copyrighted material without proper authorization may violate copyright laws. Ensure you have the necessary rights or permissions to access the file.

    Always exercise caution when opening files from unknown sources, and use reliable antivirus software to scan the downloaded files for any potential threats.
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