This morning, after playing my hacked 4.2U Wii (HBC 1.08) a bunch this week, I booted it up to find that my Wii couldn't recognize my SD card anymore. BootMii didn't load and none of my hacked app channels were loading, either, and when I clicked on the SD icon it said there was no card in the slot. I tried 2 other cards, one brand new 8GB SanDisk with whatever the highest class is right now (I think 10), and one older blue 8GB Transcend that came with a DSLR camera. Of those three (the blue one, the new one, and my 2GB white Wii SanDisk card), only the blue one could be recognized by my Wii, and I tested it all multiple times to eliminate any flukes. Finally, I tried unplugging the USB hard drive that was plugged into my Wii this entire time, and suddenly it could recognize all of my SD cards just fine. BootMii loaded and everything, even after plugging the USB hard drive back in. However, if I try to access my Wii SD card through the icon, the Wii crashes saying the system files are corrupt. Despite this, the SD card and its files are 100% intact and I've been use the apps I have installed on it to even play Skyward Sword via the USB loader. I can only conclude there's some kind of software issue with the SD card reader that doesn't affect anything related to Homebrew, one that popped up randomly one morning literally out of nowhere and might have something to do with USB hard drives. As it stands, this problem isn't affecting me at all, and if the SD card reader does actually die I can just transfer all of the card's files to the USB hard drive, but I still want to find out what's going on.