How to pre-load Call of Duty: Modern Warfare 2

gamepur.com:

With large install games like Call of Duty: Modern Warfare 2, waiting to play your game when it becomes available can be agonizing. With that in mind, you will want to pre-load it. This gets your game ready on your system, so the moment that access is available, you can jump into the game and start wrecking lobbies and claiming how good you are. Here is how to pre-load Call of Duty: Modern Warfare 2.

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If you have pre-ordered Call of Duty: Modern Warfare 2, you can set the game to install on your console or PC early. However, with the campaign coming out before the multiplayer, that will be downloadable sooner. You can begin to install the campaign for Call of Duty: Modern Warfare 2 on October 19 at 10 AM PT on all platforms. If you pre-ordered the game, your system should automatically start the download, but if not, find it in your game library or on the store and set it to install. The campaign will be accessible on all platforms on October 20 at 10 AM PT.

For the multiplayer release, things are a little more complicated. Below are all of the stores that Call of Duty: Modern Warfare 2 is playable on and the times that pre-loading will begin:

If you have already installed the campaign at this point, you can begin the installation for the multiplayer by selecting the game file and starting an update. The update should be automatic in most cases, but if not, here is how to begin an update on each platform: