A file ending in .part01 implies there is a .part02 , .part03 , and so on. You must have every single part in the same folder before you begin.
If you are trying to , I can help you with: Instructions on how to extract multi-part RAR files . Finding the software needed to open it. Understanding why a part might be corrupt or missing . MGOLD-022-u.part01.rar
: You must have every part of the set (e.g., part01.rar , part02.rar , part03.rar , etc.) in the same folder . A file ending in