You typically only need to right-click and extract the first part ( .part1.rar ); the software will automatically find and pull data from the subsequent parts, including part4. Common Uses Multi-part RARs are frequently used for:
Staying within the upload constraints of various hosting services. Extensions for multi-part RAR files include the ".partXXX" OMUP42t50.part4.rar
You must have every part of the set (e.g., part1, part2, part3, etc.) in the same folder. If any part is missing or corrupted, the extraction will fail. You typically only need to right-click and extract
Breaking down files that exceed attachment size limits. OMUP42t50.part4.rar