: 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 .
: 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. RMA.7z.005
: 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 : Take another part of the same archive (e
If you are missing this specific piece and cannot re-download it, you can attempt to "trick" 7-Zip to extract what remains of the archive, though some data will likely be lost or corrupted: Steps to Work Around a Missing Part : Right-click the first file in the sequence ( RMA