DataNumen DWG Recovery

Which versions of Windows are supported?

Our DWG data recovery tool supports Windows 95/98/ME/NT/2000/XP/Vista/7/8/8.1/10 and Windows Server 2003/2008/2012/2016/2019. And it can work for both 32bit and 64bit systems.

Are there any free ways to recover a DWG drawing?

Yes, AutoCAD has several built-in commands that can recover a corrupt DWG drawing file, as follows:

1. RECOVER: Try to recover a corrupt drawing file and open it.
   
2. RECOVERALL: Similar to RECOVER, it also recovers all other drawings referred by nested xrefs. The Drawing Recovery Log window will contain the detailed results.
   
3. AUDIT: Try to identify and fix errors in the current drawing.
   
4. RECOVERAUTO: System variable that controls the recovery process when opening a corrupt drawing file.

You can also use GUI to recover a corrupt CAD DWG file, as follows:

1. Click the Application button.
2. Navigate to Drawing Utilities > Recover > Recover.
3. In the Select File dialog box, choose the corrupt DWG file and click Open.
4. AutoCAD will try to recover and open the corrupt DWG file.
5. After the recovery, all erroneous objects will be grouped in the Previous selection set for easy access. If the AUDITCTL system variable is enabled (set to 1), the recovery results will be saved in an audit log (ADT) file.

If the above methods do not work, then you can use our DWG file recovery tool to recover your file.

AutoCAD crashes and I don’t save my drawing. Can I recover it?

Yes, when you edit your drawing, AutoCAD will save the contents as a .sv$ file. This file is called an autosave file. When AutoCAD crashes, the .sv$ autosave file still exists, so you can recover data from it, as below:

1. Start AutoCAD.
2. Click Tools -> Options.
3. In the Options dialog box, click the Files tab.
4. Click the + beside Automatic Save File Location, you will get the location of the autosave files.

Then in Windows Explorer:

1. Open the folder for the autosave files.
2. Find the .sv$ file for your wanted drawing.
3. Make a backup of the file.
4. Change the file extension from .sv$ to .dwg.
5. Start AutoCAD and try to open the file.

Note: You can also use AutoCAD Drawing Recovery Manager to recover the drawing from the backup.

If AutoCAD can open the DWG file, then that is great! However, if AutoCAD cannot open it, then you can still use the following methods:

1. Use AutoCAD built-in methods to recover the DWG file.
2. If 1 fails, use our DataNumen DWG Recovery to recover it.

I change my drawing by mistake. Can I recover the old drawing without the changes?

Yes, AutoCAD will auto backup your drawing file whenever you manually save it. So you can recover your old drawing from the backup, as below:

1. Go to the location where you save your drawing file. By default, AutoCAD will save the backup file in the same location.
2. Find the backup file. It has the same name as your drawing file, but with a .bak extension.
3. Make an additional backup of your backup file.
4. Change the backup file extension from .bak to .dwg.
5. Start AutoCAD and try to open the file.

Note: You can also use AutoCAD Drawing Recovery Manager to recover the drawing from the backup.

If AutoCAD can open the DWG file, then that is great! However, if AutoCAD cannot open it, then you can still use the following methods:

1. Use AutoCAD built-in methods to recover the DWG file.
2. If 1 fails, use our DataNumen DWG Recovery to recover it.

How long does it take to recover a DWG file?

It depends on the following factors:

1. Whether you let DataNumen DWG Recovery detect the format of the source DWG file. If you know the source file format, it is better to choose it explicitly instead of choosing Auto Determined, which will save a lot of time.
2. The DWG file size. A larger file requires more time.
3. The number of objects in the DWG file. A more number of objects need more time.
4. The complexity of the objects. For example, a DWG file containing more VERTEX (MESH) objects will take more time than one containing more LINE objects.

What is the difference between the demo version and the full version?

The demo version and the full version use the same recovery engine. However, after the recovery process, the demo version will only show you a preview of the drawing, but will not output it. You need to purchase the full version to get the output file.

Why a DWG file gets corrupt?

There are many reasons that will corrupt a DWG file, such as hard drive failure, unplugging an external hard drive when editing a file on it, viruses, power failure, too complex AutoCAD project or drawing, AutoCAD terminates unexpectedly, DWG file size becomes too large, etc. It is recommended to have a piece of DWG recovery software on hand so that whenever you encounter data corruption in DWG files, you can use it to recover the file.

Do you support to recover DWG files on Mac?

Yes, you can do as follows:

1. Copy the corrupt DWG file from your Mac to a PC/Windows system.
2. Install our repair tool on the PC/Windows system.
3. Recover the corrupt DWG file with our tool and get a new drawing file with the recovered data.
4. Copy the new file back to the Mac system.

Do you offer an online service to repair AutoCAD files?

Sorry but currently we do not offer such a service yet.

Which versions of AutoCAD are supported?

Currently, our tool supports to recover AutoCAD R14 to 2021 DWG drawing files.

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