Is this indicated in the Photoshop > Preferences > Performance > Scratch Disks dialog?
Please post a screen shot of your settings in Photoshop > Preferences > Performance > Scratch Disks.
It sounds to me that your 120-GB SSD is not designated as the primary scratch disk or it somehow got 110 GB worth of other files on it.
I hope that those 9.98 GB are not all that's availble on your boot volume, because that in itself would be a huge problem.
The screen shot will clarify everything.
I suspect the OP may be referring to »Scratch Sizes« in the »Status Bar« which indicates the amount of memory currently being used and the available RAM.
Edit: Quote from the Reference:
Displays information on the amount of RAM and the scratch disk used to process the image. The number on
the left represents the amount of memory that is currently being used by the program to display all open images. The number
on the right represents the total amount of RAM available for processing images.
That may explain the confusion. Then the 9.98 GB figure does NOT represent "available" scratch space, which is what threw me off--as it must have thrown the OP off to begin with.
Thx that explains it.