I use Time Machine to backup my OSX Mountain Lion computer. Recently I moved the "/Users" folder to a separate partition and used fstab to mount it back to "/Users". That all works fine.
But Time Machine won't see "/Users" as the original one. It sees it as a new drive and want to backup it so, resulting in a full backup of the "/Users" folder.
I've tried to alter the backup folder. Creating a hardline from the old Users folder to reflect the new Users.
Like so: "/Macintosh HD/Users" to "/Users"
But that didn't work, even using the command "tmutil associatedisk". That will result in "Not a snapshot volume."
How can I reconnect the "/Users" folder and make Time Machine backup correctly?