If this is the real tracks and the real drums, it's a simple process of copying it to the new location and then going into the setting in BB and redirecting the program to look for the files in the new location.

Another way to do this is to save all of your projects in a different folder which you should be doing anyway..... and then remove the program and reinstall it using the minimal install, leaving the big stuff on the hard drive and installing only the essentials on the C drive

OR... do a custom install and tell it to install your big folders (the real tracks) on the drive you want.

I always use the minimal install using the factory HD for the big stuff.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.