AutoCAD

How to Change Backup File to AutoCAD?

Converting Backup Files for AutoCAD Use

Understanding AutoCAD Backup Files

AutoCAD generates backup files with the .bak extension to help safeguard your work. These files are crucial in the event of a software crash or unexpected shutdown, allowing you to recover lost drawings quickly. When you need to access a .bak file, converting it to a format recognizable by AutoCAD can make your work more efficient.

Step-by-Step: How to Change a Backup File to AutoCAD Format

  1. Locate the .bak File

    • Open Windows File Explorer and navigate to the folder where your .bak file is stored. Typically, these files are located alongside your original drawing files, often in the same directory as your .dwg files.
  2. Rename the File

    • Right-click on the .bak file and select “Rename.” This allows you to change the file extension. Replace .bak with .dwg. For instance, if your file is named drawing.bak, rename it to drawing.dwg.
  3. Confirm the Change

    • A prompt will ask for confirmation regarding the extension change. Select “Yes” to confirm that you want to change the extension. Be sure to double-check that you are renaming the correct file to avoid any confusion.
  4. Open the Converted File in AutoCAD

    • Launch AutoCAD 2025. Click on “Open” and navigate to the location where you renamed your file. Select the newly created .dwg file and click “Open.” Your backup file will now be ready for editing just like any other drawing file.
  5. Check the Drawing for Integrity

    • After opening your file, review it to ensure that all elements are intact and that there are no missing components. If you encounter any issues, AutoCAD offers recovery tools that can assist in fixing minor errors.

FAQs

  1. Are .bak files automatically created by AutoCAD?
    Yes, AutoCAD automatically generates .bak files every time you save your work, serving as a safety mechanism for recovering lost data.

  2. Can I delete the .bak files after conversion?
    Once you have successfully converted your .bak file to .dwg and confirmed that the drawing is intact, you can safely delete the original .bak file without affecting your work.

  3. Is it necessary to change the file extension for AutoCAD to recognize the backup file?
    Yes, changing the file extension from .bak to .dwg allows AutoCAD to recognize and open the backup file as a standard drawing file.

About the author

Wei Zhang

Wei Zhang

Wei Zhang is a renowned figure in the CAD (Computer-Aided Design) industry in Canada, with over 30 years of experience spanning his native China and Canada. As the founder of a CAD training center, Wei has been instrumental in shaping the skills of hundreds of technicians and engineers in technical drawing and CAD software applications. He is a certified developer with Autodesk, demonstrating his deep expertise and commitment to staying at the forefront of CAD technology. Wei’s passion for education and technology has not only made him a respected educator but also a key player in advancing CAD methodologies in various engineering sectors. His contributions have significantly impacted the way CAD is taught and applied in the professional world, bridging the gap between traditional drafting techniques and modern digital solutions.