I got this fixed by doing the following
On your unity dash, type gnome-disks and launch the Disks application
Select the disk or drive you want to format
Press CTRL+F
Click format.
After formatting, the disk or drive would be unallocated, therefore you’ll have to create a partition by using the plus button on the screen. Then insert the name you’ll like to use as the drive or disk name then click on create.