This specific file ( .001 ) contains the archive header . Without this part, the rest of the volumes ( .002 , .003 , etc.) cannot be opened or decrypted, as the header contains the file table and encryption metadata.
Breaking down large installers for mirrors with file-size limits. SS-JulSS-011_s.7z.001
Often denotes a "small," "sample," or "sub-split" version of a larger set. 7z.001: Standard 7-Zip split-file format. Technical Analysis This specific file (