Right-click strictly on the part1.rar file and select "Extract Here" or "Extract to [Folder Name]" . The software will automatically pull data from the subsequent parts to rebuild the full file.
Ensure you have all required segments (e.g., part1, part2, part3) in the same folder. Extraction will fail if any part is missing.
To handle a multi-part archive correctly, follow these steps: How to Extract Multi-Part RAR Files