Symlink
From Mike Beane's Blog
C:\Windows\system32>mklink /J "C:\GAMES" "D:\GAMES" Junction created for C:\GAMES <<===>> D:\GAMES C:\<sim> <<===>> D:\<actual target with files\folders>
C:\Windows\system32>mklink /J "C:\GAMES" "D:\GAMES" Junction created for C:\GAMES <<===>> D:\GAMES C:\<sim> <<===>> D:\<actual target with files\folders>