.COS File Recovery

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

COS File Recovery

What is a .COS file?

Image settings file created by Capture One, a program used for editing and organizing digital photos; saves image adjustments (exposure, color temperature, white balance, etc.) and other nondestructive edits for a photo.

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

There are several common causes for ".COS" file loss or failure:

  1. Accidental deletion: Users may accidentally delete ".COS" files while organizing or cleaning up their computer's storage.
  2. Software or hardware issues: Issues with the software or hardware can lead to ".COS" file corruption or loss. This can occur due to software bugs, system crashes, power outages, or hardware failures.
  3. Virus or malware attacks: Malicious software can infect and corrupt ".COS" files, rendering them inaccessible or unusable.
  4. File system errors: Errors in the file system structure can cause ".COS" files to become lost or inaccessible. This can happen due to improper system shutdowns, disk errors, or other system issues.
  5. Formatting or partitioning: Formatting or partitioning a storage device without proper backup can result in the loss of ".COS" files stored on that device.
  6. Human error: Human mistakes such as accidental formatting, improper file transfer, or mishandling of storage devices can lead to ".COS" file loss.
  7. Software conflicts: Conflicts between different software applications or incompatible software versions can cause ".COS" files to become corrupted or fail to open.
  8. Physical damage: Physical damage to storage devices, such as hard drives or flash drives, can result in ".COS" file loss if the damaged areas contain the files.

It is important to regularly back up ".COS" files and maintain a reliable data recovery system to minimize the impact of these common causes of file loss or failure.

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

Use programs for recovering ".COS" 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 ".COS" 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.

The tool recovers data from any devices, regardless of the cause of data loss.

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 ".COS" 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 ".COS" extension?

Looking for how to open a stereo capture One Settings File image file file?

Programs that open ".COS" files

Phase One Capture One Phase One Capture One
Phase One Capture One Phase One Capture One

Additional Information

  • File type: Capture One Settings File

  • File extension: .COS

  • Developer: Phase One

  • Category: Settings Files

  • Format: Binary

  • File types that use the extension .COS:

    • Capture One Settings File

    • Creatures CAOS File


We will be happy to answer your questions!

Comments (1)

  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 18.12.2019 15:41 #
    Leave a comment if you have any questions about Recovering lost .COS 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.


Questions and answers

  • What is the purpose of the .COS file format?

    The .COS file format is primarily used for storing and exchanging data related to the Coordinate System (COS) used in computer-aided design (CAD) software. It contains information about the coordinate system's origin, orientation, scale, and other parameters.

    The purpose of the .COS file format is to provide a standardized way of representing coordinate system data, ensuring compatibility and consistency across different CAD software applications. It allows users to define and share coordinate systems accurately, which is essential for proper alignment and positioning of objects in a CAD environment.

    By using the .COS file format, CAD software can easily import and export coordinate system data, enabling seamless collaboration between different CAD systems and facilitating interoperability between various design and engineering tools.

  • How does the .COS format differ from other common file formats?

    The .COS format is not a commonly known file format, so it is difficult to provide specific differences compared to other formats. However, in general, file formats can vary in terms of their structure, purpose, and compatibility with different software applications. Here are a few potential differences that could exist:

    1. Structure: File formats have unique structures that determine how data is organized and stored within the file. The .COS format may have its own specific structure, which separates it from other formats.
    2. Purpose: Different file formats are designed for specific purposes. For example, image formats like .JPEG or .PNG are used for storing images, while document formats like .DOCX or .PDF are used for text documents. The .COS format might have its own distinct purpose, such as storing data related to a particular application or system.
    3. Compatibility: Some file formats are proprietary and can only be used by specific software or platforms, while others are open and widely compatible. If .COS is a proprietary format, it may only be readable or editable by a specific software or system, limiting its compatibility with other applications.
    4. Features: File formats often differ in terms of the features they support. For instance, some formats may support encryption, compression, or embedded metadata, while others may lack these capabilities. The .COS format might have its own unique features or limitations compared to other formats.

    It's important to note that without specific knowledge about the .COS format, these differences are purely speculative.

  • What are some applications or software programs that support the .COS format?

    The .COS file format is primarily associated with the Canon OS/2 format. However, it is worth noting that there are limited software programs or applications available that explicitly support the .COS format. Some possibilities include:

    1. Canon software: Canon Digital Photo Professional (DPP) is an image processing software that may support the .COS format. It is primarily used for editing and managing Canon RAW files.
    2. Third-party converters: Since the .COS format is not widely used or supported, you may need to convert the files to a more common format like JPEG or TIFF. There are various online converters or third-party software programs available that can convert .COS files to other formats.

    It's important to note that the information provided is based on general knowledge, and the availability of software programs supporting the .COS format may vary. It is always recommended to consult the official documentation or Canon support for accurate and up-to-date information.

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