For the most accurate and detailed information, I recommend checking:
When you download Mount.And.Blade.II.Bannerlord.v1.2.9.REPACK-KaOs, you typically receive a set of .rar or .bin files plus a .exe installer. Here is the technical walkthrough: Mount.And.Blade.II.Bannerlord.v1.2.9.REPACK-KaOs
Unlike the automated Steam installation, the KaOs installer allows you to omit specific assets: For the most accurate and detailed information, I
If you decide to go legit, here is the safest path to migrate your save file: When you download Mount