I would like to know if it is possible to use a single external hard drive to play GameCube, Wii and Wii U games by partitioning it in 2: one in FAT32 and the other in a format for Wii U.
Once again the man deliversyou mean something like this? https://github.com/jan-hofmeier/wafel_usb_partition/releases/
you would need ISFShax for that and it is still a prerelease.
You could also use a big SD for everything. Nitendon't and USB Loader GX with a current cIOS also support running games from SD. Also there are VC injects.

