: Ensure you have DB_5DV.part01.rar , DB_5DV.part02.rar , and any other numbered parts.

: You cannot open part02 individually. It contains only a middle section of the data.

: Large files are often split into "parts" to make them easier to upload, download, or store.

: If you are missing a part, the extraction will fail with a "Volume Missing" error.