Many repackers, such as those discussed on r/CrackWatch , include a .sfv or .md5 file. Use a tool like QuickSFV to check if your part13 matches the original source. Troubleshooting Steps
Open part1.rar in WinRAR , click "Tools," and then "Repair archive." This only works if the uploader included "Recovery Records." CallOfDutyInfiniteWarfare.part13.rar
You must have every single part (part1, part2, ... part13, etc.) in the same folder to extract the game successfully. You cannot extract part13 individually. Many repackers, such as those discussed on r/CrackWatch
Are you seeing a when you try to extract the file? part13, etc
If WinRAR or 7-Zip reports a "Checksum error" or "Unexpected end of archive" specifically at part13, that individual file is likely incomplete.
In the context of multi-part RAR archives, a "solid piece" or is a special compression method where all files are treated as one continuous data stream. Important Considerations for Your File