If you are looking at this file on your computer, here is what you need to know:
: If you get a "Checksum Error" or "Missing Volume" message, it usually means part10 or another segment is corrupted or hasn't finished downloading.
: It doesn't contain a playable version of the game on its own. Instead, it holds a specific range of compressed binary data—perhaps half of a 4K texture for a medieval castle, a few seconds of orchestral audio, or a portion of the game's executable code.