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

O File Recovery

What is a .O file?

Object file produced by a C compiler; often created instead of a program file during the development process.

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

There are several common causes of ".O" files lost or failure, including:

  1. Accidental deletion: Users may accidentally delete ".O" files while cleaning up their system or organizing files, leading to their loss.
  2. Software or hardware issues: Software errors, system crashes, or hardware failures can corrupt or damage ".O" files, making them inaccessible or unusable.
  3. Virus or malware attacks: Malicious software can infect and corrupt ".O" files, leading to their loss or failure.
  4. Power outages: Sudden power outages or improper system shutdowns can result in the loss or corruption of ".O" files.
  5. File system errors: Issues with the file system, such as disk errors or bad sectors, can cause ".O" files to become lost or fail.
  6. Incompatible software or versions: Using incompatible software or different versions of software can lead to ".O" files not being recognized or failing to open.
  7. Human error: Users may accidentally overwrite or rename ".O" files, leading to their loss or failure.
  8. Storage media issues: Problems with the storage media, such as a faulty hard drive or memory card, can result in the loss or corruption of ".O" files.
  9. File transfer errors: Errors during file transfer, such as interrupted downloads or incomplete uploads, can cause ".O" files to be lost or fail.
  10. File system formatting: Formatting a storage device without proper backup can result in the complete loss of ".O" files stored on it.

It is important to regularly backup ".O" files to prevent loss and use reliable data recovery methods in case of failure.

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

Use programs for recovering ".O" 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 ".O" 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.

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 ".O" 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 ".O" extension?

Looking for how to open a stereo compiled Object File image file file?

Programs that open ".O" files

GNU Compiler Collection (GCC) GNU Compiler Collection (GCC)
GNU Compiler Collection (GCC) GNU Compiler Collection (GCC)

Additional Information

  • File type: Compiled Object File

  • File extension: .O

  • Developer: N/A

  • Category: Developer Files

  • Format: N/A


We will be happy to answer your questions!

Comments (1)

  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 18.12.2019 16:34 #
    Leave a comment if you have any questions about Recovering lost .O 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 ".O backup" files and how are they created?

    The ".O backup" files are temporary backup files created by various software programs during the editing or saving process. These files serve as a precautionary measure to ensure that data is not lost in case of a system crash, power failure, or any other unexpected event that could disrupt the normal saving process.

    When a file is being edited or saved, some software applications automatically create a backup file with a ".O" extension. For example, if you are working on a document called "example.docx," the software might create a backup file named "example.docx.O" alongside the original file. This backup file contains the previous version of the document before any changes were made.

    The purpose of these backup files is to provide a safety net in case the original file becomes corrupted or damaged during the editing process. If an unexpected event occurs, the software can use the backup file to restore the previous version of the document, minimizing the risk of data loss.

    It is important to note that ".O backup" files are usually temporary and are automatically deleted once the original file is successfully saved without any issues.

  • How can I restore a file from a ".O backup" in case of accidental deletion or corruption?

    To restore a file from a ".O backup" in case of accidental deletion or corruption, you can follow these steps:

    1. Identify the location of the backup file: Check where the ".O backup" file is stored. It might be on an external storage device, a cloud storage service, or a specific folder on your computer.
    2. Locate the backup file: Navigate to the location where the backup file is stored using your file explorer or cloud storage service.
    3. Rename the backup file: If the backup file has an extension ".O", you may need to rename it to the original file format. For example, if the original file was a document file, you might need to rename it to have the ".doc" or ".docx" extension.
    4. Copy the backup file: Make a copy of the backup file and place it in a safe location, such as your desktop or a specific folder.
    5. Restore the file: Depending on the software or application you are using, the process of restoring the file may vary. Here are a few common methods:
    • Manual restoration: If the software or application does not have an automated restore feature, you can manually open the application and import the backup file from the location you copied it to. Look for options like "Import," "Restore," or "Open" within the application.
    • Automated restoration: Some software or applications have built-in restore features. In such cases, you may need to navigate to the restore option within the software, select the backup file, and initiate the restoration process.
    • System restore: If the file was deleted or corrupted on your computer, you can use the system restore feature (available on Windows) to revert your system to a previous state. This will restore files, settings, and programs to an earlier point in time.

    Verify the restored file: Once the restoration process is complete, open the file to ensure it has been successfully restored. Check its contents and verify that it is the correct version of the file you intended to restore.

    Note: The specific steps may vary depending on the software, application, or operating system you are using. It's always recommended to consult the documentation or support resources provided by the software/application developer for accurate instructions.

  • Are ".O backup" files compatible with all types of operating systems and software applications, or are they specific to certain platforms?

    ".O backup" files are not a standard file format and are not compatible with all types of operating systems and software applications. It is likely that ".O backup" files are specific to certain platforms or applications that use this file extension. To determine the compatibility of ".O backup" files, you need to identify the software or platform that created them and check if it is supported by the operating system or software application you are using.

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