It's not possible to play backups with Riivolution, as the development team is concerned about issues with piracy. However, using USB loader GX, it can be done with their built-in Ocarina cheat support. The P:M community boards should have guides somewhere to help with that as it's a fairly common way to play the hack. However, getting the Wii to read games from your drive in the first place is somewhat tricky.
You will most likely need to update your IOS functions; often people patch the IOS 249 or IOS 250 function stubs using custom IOS files. You can see e.g. this page for more details: https://code.google.com/archive/p/usbloader-gui/wikis/Installation.wiki