It's probably more trouble than its worth and I havent actually tried this but it should work since the program shouldnt know windows is tricking it.
First backup your saves
Open up disk management
Shrink your HDD volume by a couple gigs and format it as a seperate partition
Mount the partition in your save games folder
Restore your saves to the folder and you should be good

If you google "Mount drive to Folder windows" you can get more detailed instructions.