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CAD tip CAD tip # 4345:

   
Question CAD 
 %  platform  category 
Q - question

What is the difference between .BAK, .SV$ and .AC$ backup files?
A - answer These file types are different backup and temporary files created by AutoCAD.
  • BAK files are backup files created on manual Saves (save commands) in AutoCAD (previous DWG versions)
  • SV$ files are automatic timed backups (autosave) of drawings (deleted on successful AutoCAD exit)
  • AC$ files are temporary AutoCAD working files for various functions (undo, hidden lines...), ac$ files do not contain drawing data

Some AutoCAD functions may also create .TMP files with temporary data (drawings cannot be reconstructed from these files).

ACADLTACADMADTABSMapCivil
100% *  CAD 
12.4.2005    46628×  
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applies to: AutoCAD · AutoCAD LT · AutoCAD Mechanical · AutoCAD Architecture · AutoCAD/Revit MEP · AutoCAD Map 3D · Civil 3D ·

See also:
Tip 13274:How to switch the DWG TrueView viewer to the classic user interface, without ribbon?
Tip 12592:How to automatically purge old backup files .BAK?
Tip 11479:"Assertion failed" error when launching AutoCAD.
Tip 11170:Be an expert in saving of drawings.
Tip 11145:AutoCAD: Customization file load failed.
Selected tip: Freeing memory in 3ds max.


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