Hey guys! Wiiflow is God's gift to man, got everything working fine and I thought I'd leave my setup here, in case it helps anyone:
I completely forgot about my Wii for some good 2 years, until I picked it up again last week. It was already softmodded and I had always burned DVDs to run my games but then decided to switch to HDD, which is way more practical. The first thing I did upon messing with my Wii again was get the Syscheck app and run a test for my IOSes. Then I got the test results and used them on ModMii, to update all of my IOS files.
At first, I had decided to use USB Loader GX , so I took an NTFS hard drive (1TB 2.5" from Samsung) and created a WBFS partition to run my games from there.
Then I saw that Wiiflow had incorporated Nand Emulation and decided to switch to it so I could run Wiiware and VC games off of USB. I'm currently on r418 and my HDD now looks like this:
NTFS (USB1): WBFS folder, apps and wiiflow settings go here.
FAT32 (USB2): Emulated Nand stays here with all of my Wiiware and VC.
So far, I've been able to run all games I've tried, both on USB1 and 2 (well, maybe not all of them, Bonsai Barber gives me an error screen but I'll try messing with video settings and IOS selection later).
There's one little piece of info I'd like to leave here, though: I also have a 640GB HDD by Samsung that I couldn't for the life of me format to WBFS when I was using USB Loader GX, due to its sectors having 1024 bytes or something. When I started using Wiiflow, I thought that maybe it would work, since I wouldn't have to format it to WBFS... but it didn't. So just thought I'd give everybody the heads up (if I'm just writing nonsense, then somebody please correct me) that if you are unable to format your HDD to WBFS then you're probably not gonna be able to use it on Wiiflow or any other loaders either, even if you use NTFS or FAT32 file systems.
Oh, and I also remember some people asking a few pages back whether Rock Band 2 DLC would work if you set the game to use save data emulation. Well, I have set mine to FULL save game emulation and so far, it seems to work. Downloading songs is kinda slower now, but I think it's worth it if you can actually get DLC to run from USB.
Well, that's all, hope this helps somebody
EDIT: I haven't played the latest games, like Tintin and whatnot, so I'm not sure if those are working.