My games are stored on my Seagate - Expansion 1TB External USB 3.0 Portable Hard Drive. I'm not sure what you mean "how is it partitioned" but I do know that I put the drive in FAT32 format, and I used cIOS rev20b Installer to get IOS 236.
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I got USB Loader GX on my Wii a few days ago and everything works fine accept, that it keeps freezing when I'm playing games. I first noticed this when I was testing my games and I tested No More Heroes. It froze while at random periods during the opening cutscene. And now I'm currently trying...
Only thing drive me crazy is all these new horror games nowadays is its so dark, all time. I can't even play them. I understand they trying to create spooky but be creative a little, not just darkness with pop out scare scenes.