Just a heads-up: the SanDisk Ultra Flair USB 3.0 64GB doesn’t seem to work for loading Wii games. After trying, the drive ended up uninitialized and refuses to format even via Terminal, it looks like it went read-only or permanently failed.

Backup all files on your SD card on your PC, format it to fat 32 using fat32 format (https://gbatemp.net/download/gui-format.33869/) then test your sd card using H2Testw (https://www.heise.de/download/product/h2testw-50539) or from Downloads section https://gbatemp.net/download/h2testw.39119/Just a heads-up: the SanDisk Ultra Flair USB 3.0 64GB doesn’t seem to work for loading Wii games. After trying, the drive ended up uninitialized and refuses to format even via Terminal, it looks like it went read-only or permanently failed.