User can recover some or all of data by reverting to backup file or using commands to find and correct errors if a drawing file is damaged.

A drawing file may be damaged by a hardware failure, power outage and system crash. You’d better create a backup file if the drawing is important.

In the Open and Save tab of Options dialog box, you can specify the backup file are created when you save drawings and set the proper interval time for saving. Then a backup copy file with a “.bak” extension is created when you save the named drawing once again. After that, a backup file is always updated while you executing the command SAVE or SAVEAS.

You can use RECOVER command to check and attempt to open a damage file, then use AUDIT command to find and correct errors.

To open a damaged file, find File > Drawing Utilities > Recover,

Or Command line > RECOVER

Then the Select Files dialog box will pop up,

– Choose the file type that you want to recover.

– Choose the directory containing the damaged file.

– Choose the damaged file you want to recover and Click the Open button or Double click on the drawing you want to open.

To check errors for a drawing file, find File> Drawing Utilities > Audit

Or command line > Audit

1. To choose from the opened drawing, click on File > Drawing Utilities > Audit
2. Input Y or N to determine whether to recover the errors that are automatically found by GstarCAD, and then press Enter.