So I do understand that both Wii U backups on the Hard drive and vWii backups for Wii/Gamecube need seperates storage media. Is the simplest way to just use a HDD for the Wii U backups and then a SD card for the Wii/Gamecube? I am going to use WiiFlow as that is what I used back on the original Wii years ago. I also read that you can use 2 HDD but when going to Wii U mode you have to disconnect the vWii HDD. So that is why I think using a HDD and SD might be best. Thoughts?