Arma 2, Arma 2 OA, and Combined Ops

So I have both Arma 2 and Arma 2 OA, and, on my old PC, I had them both installed and had run arma 2 once. I then launched from Arma 2 OA and had access to everything available in both games.
Now, my old PC was destroyed, and on my new PC, I have something of a unique space situation where my Windows partition only has around 15 GB available (not including space taken by the OS). So what I do is move games I've downloaded to my Ubuntu partition using Steam mover, which creates a shortcut in the common folder, then move them back when I want to play.
My question is, do I need to download both Arma 2 and Arma 2 OA having run arma 2 once before on another PC, and if so, can Arma 2 be on another partition and still give me access to the correct things in OA? Thanks.
Best Answer
Do I need to download both Arma 2 and Arma 2 OA having run arma 2 once before on another PC?
You do need the games to run atleast once, not sure in what machine matters or not but it shouldn't.
Can Arma 2 be on another partition and still give me access to the correct things in OA
It should be no problem at all aslong as you link them properly with SteamMover.
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Does Arma 2 OA need Arma 2?
Arma 2: Operation Arrowhead is a standalone product and does not require the original Arma 2.How do I install Arma 2 Combined Operations?
Run Steam as Administrator (right-click on the Steam icon and click on "Run As Administrator"). Install Arma 2. Run Arma 2 once. Install Operation Arrowhead.Is Arma 2 Campaign Co op?
The game's campaign can be played online or via LAN in a four player co-op mode. Tactical games are built for co-op, and ArmA 2 is no exception to the rule.ArmaVN.com - Arma 2 Combined Operations with ACE\u0026ACRE (Official Video)
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