Corrupt autocad file problem

[Anonymous]

Hi,

We recently burned lots of ca files to dvd for archiving purposes, however need to access the data. The person who burned the discs, only had a +R format dvd burner, but burned them to a -R disc. We can get at the files from the disc, however when we try to open the files it states that is is an invalid format. We are using autocad 2006. I suspect that maybe the burning process has possibly corrupted the files. Is there any way of recovering these corrupted files, or is there any viewers available that i can try and download and see if its just the wrong file type for cad (the drawings are all.dwg files though). Weve tried restoring from the.bak files and through the recovery process in autocad with no success.

thanks for your help

[Anonymous · Accepted solution]

There are several methods how to try to open a corrupted AutoCAD drawing file.

• Use the Recover command
• Open the file and press ESC key just before Regeneration/Error message, save to DXF, load, save as DWG, Audit
• Insert the complaining DWG as a block into an empty drawing
• Open/save the DWG in an older version of AutoCAD or AutoCAD LT or Actrix
• Apply recovery software if nothing helped https://www.repairtoolbox.com/autocadrepair.html DWG Repair Toolbox