You will likely need to format the SSD in order to use or even see the space.
The easiest way is within Ubuntu to open up the Applications viewer and go to Disks. Your drive should be listed on the left. Format it as appropriate and all should be good to use.
Hi @Heartful-echo, you’ll need to manually change your Docker daemon’s root data dir to your SSD. First, make sure your SSD is configured to automatically be mounted on boot (you can do this through the Disks GUI utility that @gjdean3 recommended, or by creating an entry in /etc/fstab). Then you can follow this guide:
It’s important that your SSD partition gets mounted on boot, because the Docker daemon also starts-up during boot and will need that drive mounted in order to use it properly.