You usually only need to interact with the first file (part1.rar) to begin the extraction, provided all other parts are in the same folder. How to Extract sc23027-GDE.part2.rar To successfully unlock the contents, follow these steps:
Below is a guide on how to handle these types of split archives and why they exist. sc23027-GDE.part2.rar
The archive is like a puzzle. "Part 2" contains a middle chunk of the data. You usually only need to interact with the first file (part1