Ensure you have all parts (part01, part02, etc.) in the same folder.

Because the data is linked, you cannot easily extract a single file from the middle of the archive without WinRAR processing everything before it.

Updating or modifying a solid archive is slower because the software has to re-analyze the entire data block.

By treating files as a single block, WinRAR can find patterns across multiple files, significantly reducing the total size. This is common for game repackages (like Icarus ) that contain many similar small files.