Have you ever been working on a complex design project, only to experience a sudden crash or accidental closure before saving? Losing hours of hard work is every designer's worst nightmare. Fortunately, if you are working in AutoCAD, your work is rarely lost forever.
The software includes built-in safeguard mechanisms designed to automatically save backup copies of your drawing files. In this guide, we will walk you through the simple steps to locate and restore your backup files so you can get back on track quickly.
Understanding AutoCAD Backup File Formats
Before searching for your lost work, it helps to understand how backup files are saved:
- BAK Files (.bak): Created in the same folder as your original drawing every time you manually save. A .bak file represents the exact state of your drawing prior to your last save.
- Automatic Save Files (.sv$): Temporary auto-save files created at specified time intervals during your active working session.
How to Locate and Restore Your Backup Files
If you need to recover a missing or corrupted drawing, follow these straightforward methods:
Method 1: Convert a BAK File to DWG
- Open Windows File Explorer and navigate to the folder where your original drawing was saved.
- Look for a file with the same name as your project, but with a .bak extension.
- Right-click the file, select Rename, and change the extension from
.bakto.dwg. - Press Enter to confirm, then open the file directly in AutoCAD to verify your restored work.
Method 2: Locate Automatic Save (.sv$) Files
If you haven't saved manually recently, your auto-save file is your best recovery option:
1. Launch your software, type OPTIONS in the command line, and press Enter.
2. In the Options dialog box, go to the Files tab and expand Automatic Save File Location.
3. Copy the file path shown, open Windows File Explorer, and paste the path into the address bar.
4. Locate the file ending in .sv$ that corresponds to your missing drawing.
5. Copy this file to your project folder, rename its extension to .dwg, and open it.
Pro Tip: Use the Drawing Recovery Manager
For a quicker recovery process, simply type DRAWINGRECOVERY into the command line. The Drawing Recovery Manager palette will open, displaying a list of all backup (.bak) and autosave (.sv$) files associated with any drawing that was open during a crash, allowing you to restore them with a single click.
Conclusion
Losing an important project file can be stressful, but knowing where your backups are stored makes recovery quick and painless. By following these steps, you can retrieve your lost drawings and continue working with total peace of mind.
