Hacking Gamecube iso's

kp_centi · Jun 2, 2013

I'm going to order it tomorrow. Thanks for letting me know. How long did it take to get to you?

buckchow · Jun 2, 2013

winmaster said:
You'll never get GC discs to work in the disc channel, because it doesn't actually do anything besides set some flags and tell the Wii to reboot. Devolution and whatever crediar is working on are the only two homebrew applications that currently show any promise at running GC games on the vWii. Fortunately, I'd be willing to bet that running games from the original discs will be a feature available eventually, since the Family Wii and Wii U both present reasons to do that.

Is there anywhere in particular I can read more about the flags you mentioned? I'm certainly interested in understanding more about why the Disc Channel wouldn't be usable.

I'm very glad to hear how optimistic you are about those existing projects adding original disc support. There should be plenty of fun ahead if you're right.

buckchow · Jun 2, 2013

kp_centi said:
I'm going to order it tomorrow. Thanks for letting me know. How long did it take to get to you?

I bought mine from a seller here in the US, so I don't know how long one coming from that seller overseas may take, sorry.

wiismodrome · Jun 2, 2013

buckchow said:
Is there anywhere in particular I can read more about the flags you mentioned? I'm certainly interested in understanding more about why the Disc Channel wouldn't be usable.

While the security and data structure are very similar to Wii discs, Wii U basically lacks the firmware to know what to do with a GC disc. If you get a chance, see if you can rip a GC disc using CleanRip. My guess is that it will work with an adapter.

http://debugmo.de/2008/11/anatomy-of-an-optical-medium-authentication/

kp_centi · Jun 2, 2013

buckchow said:
I bought mine from a seller here in the US, so I don't know how long one coming from that seller overseas may take, sorry.

Do you happen to have a link or something? I'd prefer to buy from USA

buckchow · Jun 2, 2013

kp_centi said:
Do you happen to have a link or something? I'd prefer to buy from USA

The one I bought was just a random old CD from the same search I linked to before. That seller only had one CD with an adapter, however there's another US seller that seems to have a CD+adapter available here right now.

buckchow · Jun 2, 2013

wiismodrome said:
While the security and data structure are very similar to Wii discs, Wii U basically lacks the firmware to know what to do with a GC disc. If you get a chance, see if you can rip a GC disc using CleanRip. My guess is that it will work with an adapter.

http://debugmo.de/2008/11/anatomy-of-an-optical-medium-authentication/

Thanks for the link. That page provides lots of interesting details on the physical format of GC discs. It doesn't seem to have anything to do with the flags set by the Disc Channel mentioned by winmaster that I was wondering about, but it's still very interesting reading.

Maxternal · Jun 2, 2013

buckchow said:
Thanks for the link. That page provides lots of interesting details on the physical format of GC discs. It doesn't seem to have anything to do with the flags set by the Disc Channel mentioned by winmaster that I was wondering about, but it's still very interesting reading.

The process on a normal Wii is
1. The disk channel recognizes that it's a GC disk and runs the BC
2. The BC changes the processor and GPU to GameCube mode and runs boot2
3. Boot2 recognizes that everything's in GameCube mode and runs MIOS instead of running the System Menu.

The Wii U processor, as I understand it, doesn't have a GameCube mode and it doesn't have either BC, MIOS, or Boot2 installed and the system menu isn't programmed to even try to run BC. You can try ripping WAD's of those 3 system parts from a normal Wii and instal them in your Wii U and see what happens but if that Wii U ends up no longer having a working Wii mode, you've been warned. The normal Wii system menu will NOT work on a Wii U because the Wii U's Wii system menu is encrypted differently and the original Wii one will not be accepted. The only thing I can guess at is to try to install the old system menu as a channel .. but don't even know if that will work.

If you want to see if it's really reading the GC disk or not you could use WiiXplorer or CleanRip to test.

winmaster · Jun 3, 2013

Maxternal said:
The process on a normal Wii is
1. The disk channel recognizes that it's a GC disk and runs the BC
2. The BC changes the processor and GPU to GameCube mode and runs boot2
3. Boot2 recognizes that everything's in GameCube mode and runs MIOS instead of running the System Menu.

The Wii U processor, as I understand it, doesn't have a GameCube mode and it doesn't have either BC, MIOS, or Boot2 installed and the system menu isn't programmed to even try to run BC. You can try ripping WAD's of those 3 system parts from a normal Wii and instal them in your Wii U and see what happens but if that Wii U ends up no longer having a working Wii mode, you've been warned. The normal Wii system menu will NOT work on a Wii U because the Wii U's Wii system menu is encrypted differently and the original Wii one will not be accepted. The only thing I can guess at is to try to install the old system menu as a channel .. but don't even know if that will work.

If you want to see if it's really reading the GC disk or not you could use WiiXplorer or CleanRip to test.

This. As you can see, the disc channel itself doesn't do very much, and there are many problems with trying to perform the process Maxternal outlined on the Wii U.

1)The disc channel on the Wii U doesn't recognize GC discs (or more likely it does but Nintendo blacklisted title ID's starting with G, aka, GC discs).
2)BC and boot2 have been replaced by code specific to the Wii U, and they don't know how to set Gamecube Mode.
3)MIOS is gone. Installing the Wii version on a Wii U probably wouldn't work because installing Wii IOSes on a Wii U doesn't work. In addition, MIOS doesn't have drivers for the USB ports or bluetooth adapter, so you would have absolutely no way to control the game.

Homebrewers will have to provide their own compatibility on the Wii U. Fortunately, there are now two known projects working on getting this done.

buckchow · Jun 3, 2013

winmaster said:
This. As you can see, the disc channel itself doesn't do very much, and there are many problems with trying to perform the process Maxternal outlined on the Wii U.

1)The disc channel on the Wii U doesn't recognize GC discs (or more likely it does but Nintendo blacklisted title ID's starting with G, aka, GC discs).
2)BC and boot2 have been replaced by code specific to the Wii U, and they don't know how to set Gamecube Mode.
3)MIOS is gone. Installing the Wii version on a Wii U probably wouldn't work because installing Wii IOSes on a Wii U doesn't work. In addition, MIOS doesn't have drivers for the USB ports or bluetooth adapter, so you would have absolutely no way to control the game.

Homebrewers will have to provide their own compatibility on the Wii U. Fortunately, there are now two known projects working on getting this done.

Thanks very much to you and Maxternal for these details.

kp_centi · Jun 3, 2013

buckchow said:
The one I bought was just a random old CD from the same search I linked to before. That seller only had one CD with an adapter, however there's another US seller that seems to have a CD+adapter available here right now.

That's the one I found last night. ~~I already ordered it~~ Going to order

kp_centi · Jun 10, 2013

I finally got the adapter. By default the vWii's Disc Channel can not read it. I tried to rip a game using CLEAN RIP, it could not detect what game it was and failed to rip. I tried it with Devolution, I just get kicked back the HBC menu. Maybe they fixed up the IOS or Drive software. Hopefully this could work soon

g4jek8j54 · Jun 10, 2013

kp_centi said:
I finally got the adapter. By default the vWii's Disc Channel can not read it. I tried to rip a game using CLEAN RIP, it could not detect what game it was and failed to rip. I tried it with Devolution, I just get kicked back the HBC menu. Maybe they fixed up the IOS or Drive software. Hopefully this could work soon

Just curious, but did you only try this on a Wii U, or did you try it on a regular Wii as well? Does CleanRip and/or Devolution act any differently on a regular Wii if you try to rip a disc and they verify a game?

kp_centi · Jun 10, 2013

Tried it on my Wii with GC ports. It works fine. CleanRip and Devolution worked fine on my Wii.

wiismodrome · Jun 10, 2013

Please try WiiXplorer and see if the Wii U can read any files on the GC disc.

kp_centi · Jun 11, 2013

It does not work. Ripping Wii Games does not work either

wiismodrome · Jun 11, 2013

kp_centi said:
It does not work. Ripping Wii Games does not work either

Thanks for testing. Looks like the Wii U likely won't read GC discs without some serious work.

Maxternal · Jun 11, 2013

kp_centi said:
It does not work. Ripping Wii Games does not work either

No Wii games either? so basically Wii homebrew has no drive access in vWii at all?
That sucks

kp_centi · Jun 11, 2013

It seems to rip Wii Games you need cIOS

Maxternal · Jun 11, 2013

hmm, many usb loaders have the ability to rip and recognize GC games (using a cIOS), you could see if that works from vWii.

(I know Devolution doesn't use a cIOS ... but I'm sure it could work some magic with AHBPROT disabled)

Hacking Gamecube iso's

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