How to Restore Corrupted .ISZ Files on Windows, MacOS, and Mobile Devices

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 .ISZ file recovery guide for Windows, MacOS, Android and IOS in 2024.

How to Restore Corrupted .ISZ Files on Windows, MacOS, and Mobile Devices
Data Recovery Tool

What is a .ISZ file?

An ISZ file is a file compressed in a disk image format (a.k.a. "ISO Zipped") developed by ESB Systems. It is similar to a regular .ISO file, but compressed to save disk space and may also be password-protected and encrypted using AES128, AES192, or AES256 encryption.

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

There can be several common causes for ".ISZ" file loss or failure:

  1. Accidental deletion: Users may accidentally delete ".ISZ" files while organizing or cleaning up their computer, leading to their loss.
  2. File system corruption: If the file system on the storage device where the ".ISZ" files are stored gets corrupted, it can result in the loss or failure of the files.
  3. Virus or malware infection: A virus or malware attack on the computer can corrupt or delete ".ISZ" files, making them inaccessible or unusable.
  4. Hardware failure: Issues with the storage device, such as a hard drive failure or bad sectors, can lead to the loss or corruption of ".ISZ" files.
  5. Software conflicts: Conflicts between different software applications or improper installation/uninstallation of software can cause ".ISZ" files to become corrupted or fail.
  6. Power outage or system crash: Sudden power outages or system crashes while working with ".ISZ" files can result in their loss or failure.
  7. Incomplete or interrupted file transfer: If the process of transferring ".ISZ" files from one location to another gets interrupted or incomplete, it can lead to file loss or corruption.
  8. Human error: Mistakes made by users, such as accidental formatting of storage devices or improper handling of files, can cause ".ISZ" files to be lost or fail.

It is essential to regularly back up important ".ISZ" files to prevent their loss and use reliable data recovery tools in case of accidental deletion or file corruption.

How to recover lost ".ISZ" 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 ".ISZ" file may be deleted.

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🧺 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 ".ISZ" file is always to create it once more.

Use programs for recovering ".ISZ" 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 ".ISZ" 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.
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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 ".ISZ" 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 ".ISZ" extension?

Looking for how to open a stereo zipped ISO Disk Image image file file?

Programs that open ".ISZ" files

Windows
EZB Systems UltraISO EZB Systems UltraISO
WinMount International WinMount WinMount International WinMount
Alcohol 120% Alcohol 120%
DT Soft DAEMON Tools DT Soft DAEMON Tools

Additional Information

  • File type: Zipped ISO Disk Image

  • File extension: .ISZ

  • Developer: EZB Systems

  • Category: Disk Image Files

  • Format: Zip

  • HEX: 49 73 5A 21

  • ASCII: IsZ!

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Comments (1)

  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 18.12.2019 11:58 #
    Leave a comment if you have any questions about Recovering lost .ISZ 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 .ISZ format and what is its purpose?

    The .ISZ format is a compressed disk image file format. It is primarily used for creating and storing disk images, which are exact copies of an entire disk or a specific partition.

    The purpose of the .ISZ format is to provide a highly efficient and compressed way of storing disk images. It uses advanced compression algorithms to reduce the file size while maintaining the integrity and structure of the original disk. This makes it easier to store and transfer large disk images, especially when dealing with limited storage space or slower internet connections.

    .ISZ files can be mounted and accessed using various disk image management software, allowing users to access the contents of the disk image without the need for physical media. They are commonly used for software distribution, backup and recovery purposes, and for running virtual machines.

  • How does the .ISZ format compare to other compression formats like .ZIP or .RAR?

    The .ISZ format is different from compression formats like .ZIP or .RAR in terms of functionality and features. Here are some key points of comparison:

    1. Compression Ratio: The .ISZ format typically offers a higher compression ratio compared to .ZIP or .RAR. This means it can compress files more efficiently, resulting in smaller archive sizes.
    2. Compression Speed: .ISZ compression can be slower compared to .ZIP or .RAR, as it focuses on achieving higher compression ratios rather than speedy compression.
    3. Decompression Speed: The decompression speed of .ISZ archives is generally slower than .ZIP or .RAR, as the compression algorithm used in .ISZ is more complex.
    4. File Support: .ZIP and .RAR formats are widely supported and can compress any type of file or folder. On the other hand, .ISZ is a proprietary format associated with the UltraISO software. It supports various file types but may not be as universally compatible.
    5. Encryption and Password Protection: .ZIP and .RAR formats provide built-in encryption and password protection options, allowing you to secure your archives. .ISZ does not offer these features natively, although you can encrypt the files before creating an .ISZ archive.
    6. Multi-volume Archives: .ZIP and .RAR formats support splitting large archives into multiple volumes for easier storage or transfer. .ISZ also supports multi-volume archives, allowing you to split large files across several discs or storage devices.
    7. Platform Compatibility: .ZIP and .RAR formats are supported on multiple operating systems, including Windows, macOS, and Linux. However, .ISZ is primarily associated with Windows-based systems and may have limited support on other platforms.

    In summary, the .ISZ format excels in achieving higher compression ratios but sacrifices compression and decompression speed. It may be suitable for specific use cases where file size reduction is a priority, but it may not offer the same level of compatibility and convenience as .ZIP or .RAR formats.

  • Are there any specific software programs or tools required to open and extract files from .ISZ archives?

    Yes, there are specific software programs or tools required to open and extract files from .ISZ archives. One popular tool is "UltraISO", which is capable of opening and extracting files from .ISZ archives. It is a paid software, but a trial version is available for free. Additionally, "PowerISO" is another software that can handle .ISZ archives. It is also a paid software but offers a trial version for free.
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