Windows and macOS do not natively support RAR files, so you will need a third-party tool: WinRAR download free and support: WinRAR
Multipart RAR files are used to split large data into smaller segments.
Do rename the files; they must follow the original sequence for the software to recognize them as one archive. 2. Recommended Software
Ensure every part (e.g., part1.rar through partN.rar ) is in the .