I loaded the game--went to the site to create my account--then tried to download the client. I keep getting a message saying I have insufficient space. Also it said it would take 12 hours to download and I have a decent Cable modem connection. I have 932 GB free. It's only supposed to need 12GB so what gives??? I have uninstalled and tried a second time and the same thing happens.
With 1TB of Space, I would never allocate that as one large hard drive. Then again, I've been using multiple drives for years. When I downloaded the UK SC client on Roadrunner Turbo (I know, weird right? UK game US internet) I got the game in 3 hours and nearly full speed. Are you sure the save folder you selected was a proper path? I would try saving it to c:\install or something and see if that works, unless you have multiple hard drives on the same computer...
DEFINITELY recommend multiple partitions in a drive that large. I have a 750 in three sections. It's actually rather convenient to store games on one partition, music on another.