The archive is like a puzzle. "Part 2" contains a middle chunk of the data.
Below is a guide on how to handle these types of split archives and why they exist. sc23027-GDE.part2.rar
A file named is a specific volume of a multi-part compressed archive. Because it is labeled "part2," it cannot be opened on its own; it requires the accompanying "part1" (and any subsequent parts) to reconstruct the original data. The archive is like a puzzle