Right click on the Start corner > Command Prompt (Admin) > Yes > Type:
Originally Posted by BruceBanner
Replace the "U:\" text with your own drive letter. Each line has a separate command that you press enter to execute.
mklink /j C:\Users U:\Users
mklink /j C:\ProgramData U:\ProgramData
When you open Explorer to the C drive, you should see the "Users" and "ProgramData" junctions that look like folders.
I forgot to mention that when you create a new user account, the Metro apps should work.