Linsh.rar -

In the "General" tab, set to RAR (Solid mode only works with RAR, not ZIP). Check the box for "Create solid archive" .

If you provide this info, I can tell you if you should be using the rar command-line tool or if a simple right-click in Windows will do the trick. rar - ArchWiki Linsh.rar

Are you trying to create or turn multi-part files (.part1, .part2) into one ? In the "General" tab, set to RAR (Solid