430.7z.001

: This usually means part .001 is corrupted or you are missing a piece. Check that the file sizes of all parts (except the last one) are identical.

Select > Extract Here (or "Extract to [Folder Name]"). 430.7z.001

: You must have every numbered part in the same folder. : This usually means part

If you prefer the terminal, move to the folder and run: 7z x 430.7z.001 To help you further, I'd need to know: What are you using? Do you have all the parts (e.g., is there a .002)? don't change .001 to just .7z).

: Do not rename the extensions manually (e.g., don't change .001 to just .7z).