: You do not need to open part 02 directly. Instead, locate and open unknown.part01.rar using an extraction tool like WinRAR, 7-Zip , or PeaZip .
: Ensure every file in the sequence is in the same directory. unknown.part02.rar
: Right-click the first file and select "Extract Here" or "Extract to..." . The software will automatically detect and "join" all subsequent parts (like your part02.rar) to reconstruct the original full file. Troubleshooting : You do not need to open part 02 directly