I installed Diablo 2 from 3 CD parts and when i try to install LoD expansion it says that i don’t have Diablo 2 installed and i need to install it first
Hi,
I’m surprised you were actually able to install the base part from the CDs… 
The preferred installation method now is to redeem the Classic Diablo II (base & LoD) in your Battle.Net account prior to installation; if you haven’t yet, you can do so here: https://account.battle.net/overview (copy paste my link in an empty browser tab or window).
Then, click on “Games & Subscriptions” in the left margin, and scroll down to the “CLASSIC GAMES” section. You will find your new license key for Classic Diablo II and Diablo II LoD, as well as a button to download the latest version (1.14B) of the game. See this screenshot: https://i.imgur.com/nhx52fP.jpg
If you prefer to play Classic Diablo II in a language other than English, you can specify your preferred language here: https://www.blizzard.com/en-gb/download/ before downloading it (scroll down to the Classic Games area).
Finally, you need to download the patch which will bring your game to version 1.14D; the patches are located on Blizzard’s FTP site. Since you have both Diablo II and Diablo II: LoD, use the appropriate link below: (copy and paste in your browser to download the patch):
- For PC version:
http://ftp.blizzard.com/pub/diablo2exp/patches/PC/LODPatch_114d.exe - For Mac version:
http://ftp.blizzard.com/pub/diablo2exp/patches/Mac/LOD_Patcher_114d.app.zip
(Just in case you’re wondering where these addresses come from… see the last paragraph in https://eu.battle.net/support/en/article/13867 – the links that I have provided above are from the “and Diablo II: Lord of Destruction (PC / MAC).” part. You don’t need to download the Diablo II (base) patch.)
Regards.