: You only need to interact with the .001 file.

: Since it uses the 7z format, it likely employs high-ratio compression algorithms (LZMA or LZMA2). This is effective for significantly reducing the size of large datasets, software installers, or high-definition media. Integrity & Security :

A file named is the first volume of a split 7-Zip compressed archive .

When you have a very large file or folder, compression software like allows you to "split" the resulting archive into smaller, manageable chunks (e.g., .001, .002, .003). To access the contents, you must have all parts of the archive in the same folder. Key Features and Mechanics