Originally Posted by airspoon
No longer works, unfortunately. I hate Origin and the EXTREMELY slow download rate is pathetic enough to scare anyone away from buying Origin exclusives. I'll pay twice as much for a game to get it through Steam or Gamestop if I had to. I have tried everything to move my BF3 installation over and Origin refuses to see it. Even though I have the 30+ GB BF3 folder in the installation path, Origin still feels the need to download the game. Where is downloading to? I have no idea because it's all there already.
I just reinstalled Windows 8 a couple days ago and this works fine.
Rename your old origin folder, install origin and start the download for a game for a few seconds. Exit origin completely, copy the folder from the old origin folder over top of the partially installed folder. Launch origin. For BF3 it goes through the motions of reinstalling stuff, but its going at 20mb/sec but did it all locally.
It worked for Simcity, BF3 with Premium, and NFS: Most wanted.
If you don't move/rename the original files and click download I think it deletes the folder and tries to re-download.