Trying to get a Symlink but it turns to be an Alias I'm trying to move my Backup folder from the SSD to another internal HD via symlink using this command:

ln -s /MacintoshHD/Backup   ~/Library/"Application Support"/MobileSync


the problem is, when i hit enter instead of creating a Symlink I get an Alias. Any suggestion on why this is happening?
The command you used is ok. This created a link in ~/Library/"Application Support"/MobileSync that points to /MacintoshHD/Backup. And this is is a symbolic link.

However, is you get the info on Finder it will catalog as Kind: Alias.

The first letter of the output of ls -l will show you that is a symbolic link:

lrwxr-xr-x   1 username staff    8 Dec 10 18:27 MobileSync -&gt; /MacintoshHD/Backup/