By your description, I presume you ahve an SSD and a separate hard drive installed in your computer.
When you say "saving" to the SSD do you mean that by default it is saving any downloaded or saved files to a folder on the SSD, or do you mean that when you install a new app or game it is defaulting to the SSD as the install/save location?
If you mean when installing apps and games it is defaulting to the SSD then you need to change the installation location when installing said app or game.
If you mean when downloading or saving files, then (again) you need to change the default location either by 1) when downloading go into your browser properties and changing the default locations for saved/dl'd files, or 2) when windows prompts you to save the file location choose the hard drive instead of the SSD.