If you know which version of AutoCAD the damaged file was saved in, please indicate this version in the
DWG Version menu. In this case recovery algorithms will be applied only for the version indicated, which significantly decreases the file recovery time. If
Autodetect is selected, then, for the damaged file, recovery algorithms will be applied for all versions. Explanation of DWG versions:
Make sure that
Smart Decompress option, located in
Tools-Options-Additional is on. If the option is on, then the program uses modified data unpacking methods. They are faster than standard methods, however, some data may be missed. If the option is off, then the program uses standard data unpacking methods.