Today I’d been having the error: Error opening usb1:/. I tried and tried everything I could think of along with others suggestions, and then I decided to use a flash drive and when installing it on my computer it had to restart the computer. I also had my Seagate drive connected at the time and when it restarted the computer automatically ran chkdsk on the Seagate and it found several indexing files that were corrupted and deleted them along with many other files that were messed up, it also fixed any errors on the harddrive. I no longer have that error and works fine. So it may not be a problem with your Wii, Homebrew, or WiiMC; it may be some corrupt index files on your hard drives that need fixing.
