You only need to interact with the ( .001 ) to extract the entire archive.
Do you have (like .001) in the same folder as your .002 file? First.7z.002
: Ensure all files have identical base names (e.g., First.7z.001 , First.7z.002 ). If they differ, the extraction software will not recognize them as a single set. How to Extract You only need to interact with the (