- Get into Recovery mode and launch CMD
- Figure out which drive is really C: and which is D: sometimes C: can be D: and D: can be E:
- Use the following command to copy the data (/mir will delete any files that are already in D:\users to keep them use operator /E)
C:> robocopy /copyall /mir /xj Users E:\Users
- Remove the original directory in C:
C:> rmdir /S /Q Users
- Create your symbolic link
C:> mklink /J Users D:\Users Junction created for Users <<===>> D:\Users
- Check the junction is there by using dir u should see <JUNCTION> Users [D:\users] on your C: drive
- Then just exit and restart
Reference: http://docs-windows.readthedocs.org/en/latest/move-users-to-another-drive.html & http://www.bleepingcomputer.com/tutorials/windows-8-recovery-environment-command-prompt/#start
Use at your own risk or call our computer experts to complete the above steps for you.