Ensure you have downloaded happy_mining.part1.rar , happy_mining.part2.rar , and any subsequent numbered parts.
Files downloaded in multi-part RAR archives from unknown sources can sometimes contain malware. Always run a scan with your antivirus software on the extracted folder before running any executable ( .exe ) files. happy_mining.part1.rar
If the process stops and asks for a specific volume, you are missing one of the numbered parts in that folder. Ensure you have downloaded happy_mining