"Protect archive from damage" command
This command is accessible both in file management and in archive management modes. If you are inside of archive, there is no need to select any files, just run "Protect archive from damage" command using either Commands menu, "Protect" button on the toolbar or Alt+P keyboard shortcut. If you browse uncompressed files in the file management mode, first select files and folders which will be searched for archives to protect.
This command adds a recovery record to the currently opened or selected archives. It may help to repair it later in case of small physical damage of the archive data. This feature is supported only by RAR archives.
If an opened archive is the first file in the multivolume sequence, you may also create recovery volumes for it. Just enter a number of .rev files to create. You may also append a percent character to this parameter, in such case the number of creating .rev files will be equal to this percent taken from the total number of RAR volumes.