To answer your question... no. If you are trying to run a backup disc, the wii first needs to be able to read backup media. This can only be done by installing patched ios' and custom ios' which can only be done by using the homebrew channel to access those applications which install those ios'. The homebrew channel can only be installed by hacking the console. Still if you didnt want to use backup disc medi and instead wanted to use an external hard drive, you would still need to install a program that will recognize the hard drive thats plugged into the wii. Once again that program can only be installed using the homebrew channel.