Probably an outdated guide, but look here https://gbatemp.net/threads/wii-u-usb-loading-install-wiiu-games-to-usb-or-internal-memory.445514/Hello every one , Been reading on this site for awhile now. I have done done other modding to original xbox's using mod chips and softmod's using my PC motherboard hard drive hot swap trick, have modded Wii's using the BatHax and that online code thing that replaced it. I have modded the vwii on my old Wii u that I had to sell awile back, My current wiiu is Vanilla, have been using loadliine -- but thats still vanilla.
I'm going to try and not ask the same questions every one has asked a million times, I have done my research on this site for the last year and been waiting for a method that seems safe "enough". Now seem like a good time to jump in.
The one thing I seem to be missing is how do I put loadiine format games on USB if USB is not FAT32 capable yet ? or any games for that matter
Basically you can't install loadiine ready games to usb right now. You can install wiiu games downloaded from nus to the internal storage/exhdd though.