ISO size difference with WBFS manager

Dec 15, 2015 at 3:10 AM
I have an ISO file that is 4.37GB, when I add it to WBFS manager is says estimated size .03gb and ISO size 4.37GB. When I add it to the drive it's .03gb and doesn't run in the Wii. I not sure if Im doing something wrong or not. Any help would be appreciated!