The file is a specific part of a multi-volume 7-Zip archive. To extract the files inside, you must have all the pieces (starting from .001 ) in the same folder.
: Right-click the first file in the sequence ( RMA.7z.001 ) and select Extract . 7-Zip will likely report a "Data error" or "CRC error" when it hits the dummy part, but it may still successfully extract the files that were stored in the other parts. Important Requirements How to recover corrupted 7z archive RMA.7z.005
: For the best chance of the archive opening, the dummy part should ideally be the same size in bytes as the other full volumes in the set. The file is a specific part of a multi-volume 7-Zip archive
: Take another part of the same archive (e.g., RMA.7z.004 ) and create a copy of it. Rename the Copy : Rename that copy to exactly RMA.7z.005 . 7-Zip will likely report a "Data error" or