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How do I open a .BAK file?

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Last Updated
3rd o December, 2008

Original Author
Alan Cullen
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To locate a .BAK file, ensure hidden files are set to 'show'.

In Windows Explorer, go to ToolsFolder optionsView
and in the Advanced settingsHidden Files and Folders
unclick 'Hide extensions for known file types', otherwise the renamed file will become filename.dwg.bak and will not open in AutoCAD.

Once hidden files are set to 'show', use the Windows Explorer search function to locate the .BAK file.

It is a good idea to copy the .BAK file to another folder to ensure you have a backup of the .BAK file.

Rename the file to any other name, such as filename-1.dwg - it should now open in the usual manner.

Follow the same process to utilise an autosave file .sv$

Visitor Comments

  1. Comment #1 (Posted by Robert Abbott )
    I tried what you are explaining here but cannot change to a .dwg file it just renames the file name.dwg and not the actual file association just the display name. (Please take your question to cadtutor.net/forum-Tiger-080516)
  2. Comment #2 (Posted by Anonymous)
    Good advice (Thanks - Tiger, 13 August 2008)
  3. Comment #3 (Posted by Mary Ann Laroya )
    I followed the instructions but, stil, I cannot open the files well. It said that the file is corrupted or damaged. What will I do? I need to print my autoCAD design in a white paper. Please help me.Thanks (Please take your question to cadtutor.net/forum - Tiger 080922)
  4. Comment #4 (Posted by svtiss)
    Works very well, thanks (Thank You - Tiger 081001)
  5. Comment #5 (Posted by Natalia Flores )
    I tried what you explained here and It works! thanks so much! (Thank You - Tiger 081001)
  6. Comment #6 (Posted by Engr. Lal Zarin )
    INTERNAL ERROR: !saveres.cpp@437:eGeneralModelingFailure Please help me for this error when I open AutoCAD file. I can not open it. this INTERNAL ERROR: !saveres.cpp@437:eGeneralModelingFailure. coming on screen. Thanks (Please take your questions to cadtutor.net/forum - 081027 Tiger)
  7. Comment #7 (Posted by ANIL )
    some time it works but some time it doesnot work though its good!! (Thanks..or? If you have further questions please take them to Cadtutor.net/forum - Tiger 081121)
  8. Comment #8 (Posted by Helena)
    It worked! Thanks v much. (Thank You! - Tiger 081209)
  9. Comment #9 (Posted by Richard )
    When I go to Recycle bin I keep getting a list of bak. files in there which I have not deleted (some relate to Outlook Express) Any idea why I simply delete them permanantly & I have found no problems with my PC Regards Richard (Please take your question to Cadtutor.net/forum - Tiger 090126)
  10. Comment #10 (Posted by DON )
    IT WORKS, NO HITCHS.THANX A BUNCH. (Thank You! -Tiger 090205)
  11. Comment #11 (Posted by Nasreen Mubarak )
    thanks, thats very good. vvvv thanks (Thank You! - Tiger)
  12. Comment #12 (Posted by hrxx)
    Works, thanks! I just recovered the whole day work!!! :) (Thank You - Tiger 090525)

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