I know I'm late, but there's a far better remedy for redirection (what you are trying to achieve) within Windows than what's being used by everyone here, and it is called the junction link. As an example, I will describe how I moved my Mods folder from its original location on my C: Drive, to my E: Drive, an M.2 SSD that I use to run programs that take (relatively) forever to load on a HDD:
To be clear, this is the original path to my Sims 4 Mods directory ("directory" is a synonym for "folder"):
"C:\Users\testpc\Documents\Electronic Arts\The Sims 4\Mods"
Step 1 - create the new location:
copy your Mods directory (or whichever directory you wish) to your desired location. Just remember the file path to your new Mods location.
When I was done copying, I had the following file path structure:
"E:\Sims 4 Mods\Mods"
Step 2 - backup your original:
edit your original Mods directory's name, and append the following phrase to that directory's name
~original
So my Mods directory was renamed to Mods~original
Step 3 - open the command prompt:
You will need to open the command prompt, and I recommend doing so as the administrator (I don't know your permissions scheme, so running as the administrator may avoid errors for some users). If you don't know how to run the command prompt, then: open the windows start button, and in search, type the following phrase: command prompt. You can figure it out from there.
Step 4 - execute the instructions:
I ran the following command to lead "The Sims 4" program to its new Mods folder location:
Mklink /J "C:\Users\testpc\Documents\Electronic Arts\The Sims 4\Mods" "E:\Sims 4 Mods\Mods"
The Mklink command has the following structure:
Mklink /J "Old file location" "New File Location"
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This web page has info on junction links: http://techgenix.com/folder-redirections-in-windows/
