: This specific part contains the "header" or index that tells extraction software how the rest of the data is structured.
: You cannot open or extract it without the other parts (e.g., 25n.7z.002 , 25n.7z.003 ). 25n.7z.001
: As long as they are named identically except for the number, the software will automatically "stitch" them back together. Troubleshooting : This specific part contains the "header" or