I don't have enough space in C: and my D: drive is a 128gb microSD. I was able to link the OneDrive folder in Windows 8.1 but it won't let me in Windows 10?
1. Unlink OneDrive from your computer.
2. Move your OneDrive folder to destination.
3. Start OneDrive and link to your computer. Confirm use of existing (newly located) folder.