: part09 indicates this is the 9th part of a multi-part RAR archive. You will likely need all previous and subsequent parts (e.g., part01 through the final segment) in the same folder to extract the contents.
: uhd (Ultra High Definition) suggests a 4K resolution. mda.elyyyyy.full.pl.uhd.part09.rar
: Download all parts of the archive. If one part is missing or corrupted, the extraction will fail. Software : Use an extraction utility like WinRAR or 7-Zip . : part09 indicates this is the 9th part