Always right-click on Part 1 (or the base file if it's not numbered) and select "Extract Here" or "Extract to..." .
The extraction software will automatically read through Part 1, Part 2, etc., and stitch them back together into your complete file.
Click . WinRAR will automatically slice your data into exact pieces of that size, with the leftover data in the final piece. 📂 Extracting a Piece of a RAR File
If this query is referring to a hyper-specific online forum topic, or a video game mod archive labeled 21408.rar , could you provide it came from? This will allow for a more specific set of instructions! How to split rar files into parts
for each piece (e.g., 100 MB or 1 GB ).