Installing Wrath to an External Hard Drive

This is my World of Warcraft folder before installation for Wrath:

This is my World of Warcraft folder after installation for Wrath:

Now if you’re like me, then you’re playing on a 3.5-year-old computer (laptop or desktop) that doesn’t have enough space to run Wrath of the Lich King from your internal hard drive. Luckily, Blizzard games are always kind enough for their folders to be played around with. If you want to play from your external hard drive, you can.

1. Copy your “World of Warcraft” folder into your external hard drive (wherever). (Don’t cut, in case something happens during the installation process.)
2. Run your launcher from that location in your external before beginning installation. (If you don’t do this step, the installer will refer to the location from where you last started your launcher, which would be in your internal hard drive. It will tell you that you don’t have enough hard drive space.)
3. Insert the Wrath of the Lich King DVD, begin your installation and let the updaters do their job.

Your game should now be ready to play. If any shortcuts to your old internal “World of Warcraft” folder remain, purge it just in case. Start up the game from the files in your external hard drive. If things go well, you should be able to just delete the folders in your internal hard drive and free up that 10 GB of space.