Relocate user profile to another drive in Windows 7

First active the administrator account (from a cmd prompt "Run as administrator")

net user administrator /active:yes

net user administrator password

http://www.windows7home.net/how-to-enable-or-disable-administrator-account-in-windows-7/

Second, move c:\Users\x to another drive such as d:\Users\x

Finally, create the symbolic link

mklink /D C:\Users\x  D:\users\x

http://www.tips5.com/how-to-relocate-user-profile-folder-to-other-drive-in-windows-7