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
Optional: Select a "Best" compression method for higher compression. Click OK to generate the solid archive. Key Considerations for Solid Archives:
In the "General" tab, set to RAR (Solid mode only works with RAR, not ZIP). Check the box for "Create solid archive" .
Right-click the folder or files you want to archive.
Are you trying to create or turn multi-part files (.part1, .part2) into one ?
Many small, similar files, as it treats them as a single stream to boost compression.
Linsh.rar Here
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
Optional: Select a "Best" compression method for higher compression. Click OK to generate the solid archive. Key Considerations for Solid Archives:
In the "General" tab, set to RAR (Solid mode only works with RAR, not ZIP). Check the box for "Create solid archive" .
Right-click the folder or files you want to archive.
Are you trying to create or turn multi-part files (.part1, .part2) into one ?
Many small, similar files, as it treats them as a single stream to boost compression.