To move any folder on Mac OSX Mountain Lion to your secondary drive, use the following command.
Assuming the following,
Primary Drive – SSD (SSD is the name of the drive btw)
Secondary Drive – HDD (HDD is the name of the drive btw)
To move the Download folder from SSD to HDD:
1. Access Terminal. Please do a ls command to make sure you are in the right directory.
2. To move the Downloads folder to the HDD, we will enter the following command.
The command move the Downloads folder to another folder call SymbolicLink/Download in my HDD drive.
You will be prompt for your password.
sudo mv ~/Downloads /Volumes/HDD/SymbolicLink/Download
3. Creation of the Symbolic Link.
ln -s /Volumes/HDD/SymbolicLink/Download ~/Downloads