Execute setup.exe from the mounted drive to install the game.
After installation, open the "CODEX" folder inside the mounted ISO, copy all its contents, and paste them into your main game installation directory, overwriting existing files. Drift21-CODEX.part1.rar
Once extracted, you will typically find an .iso file. Use a virtual drive tool or right-click to mount it in Windows. Execute setup
Use a tool like WinRAR or 7-Zip . Right-click "part1.rar" and select "Extract Here." The software will automatically pull data from the subsequent parts. copy all its contents