cannot add items in 7 zip when trying to download split files

[Biodeamon 10]

So whenever I try and add files together whenever there is a game split into 200 mb sections, 7 zip always refuses and tells me "this action not supported".

How do I put the multiple back together in one piece in 7 zip?

 

I can only seem to get single portions to work

[stkrge 172]

use winrar is more promising

[Göffel 25]

You do not add / join files.

 

 

You just unzip the first part, 7-zip will then automatically unzip all parts and join the content into one folder.