Hi crfjrf2
I am Dave, an Independent Advisor, I will help you with this . . .
1
Are you sure you don't have a 16GB USB or SD card inserted into your PC, that looks like a totally separate disk to your SSD
2
Click your Start Button, then just type cmd
Right click Command Prompt in the resulting list and select 'Run as Administrator'
Run this command and press Enter:
diskpart
Run this command and press Enter:
list disk
Please post a screenshot of the resulting Command Prompt window