Partial Channel uses real NAND for saved games
That's wrong.
OFF = No NAND access is redirected
Partial = /title/ (and some other folders: tickets, tmp, import and sys) is redirected to EmuNAND (/title/ folder contains savegames AND installed titles data/saves). NOT emulated : meta, shared, shared2, dev, tmp/uid.sys, sys/uid.sys.
Full = All NAND access is redirected, except /dev/ and /tmp/launch.sys
If you use Partial with a Wii game, it redirects /title/ folder which contain the savegames (the game data is on disc)
if you use Partial with emuNAND channel it redirect /title/ folder which contain both savegames AND channel's data.
There's no "emuNAND option" for channels installed on NAND. partial save doesn't affect them.
Partial redirects all access from /title/ folder to EmuNAND's /title/
The meta and shared1 shared2 folders are still accessed from NAND (settings, Mii, wiimote synch, etc.)
I don't really see a use of "emuNAND channel" being set to partial, because the channel data is located in /title/ folder too, which is redirected both with partial and full. it's not redirecting only the save, but the data too. to launch them you need a full NAND dump. so why not using full if you made a full dump of your NAND?
using partial with emuNAND channels would use the settings and mii stored no the console, so the only benefit I see could be:
- you use your dump on different consoles and use the console's wiimote? (but attention, the Mii would be different! some games heavily rely on them, if you don't have the same mii, you will lose your savegame). Instead, it's recommended to copy the host's wiimote synch to your EmuNAND (features>NAND dump>Sysconf) to use the host's wiimote synch data on your emuNAND.
- Allows network access? full emuNAND doesn't have network access, and we don't know why. Is partial working with network? (as it's using the NAND settings, wiimote synch, mii data)
- Launch "incompatible" channels on emuNAND by having that channel on realNAND too. usually, incompatible channels (castlevania) is because some files are still trying to access realNAND. But you don't need "Partial", having the channel on realNAND+EmuNAND with "full" is also fixing the issue. The benefit to have it on both is to save the savegame on emuNAND or else you would just install it on realNAND.
- don't always have to dump the updated settings to the EmuNAND whenever I change something. (you often change your settings? feature>dump nand>sysconf, and you are done)
That's the only benefit I can think of, and except network access (untested) I don't really understand why users would choose partial for channels.
There were some revisions where EmuNAND chan was always forced to full. But Dimok added the partial option.
I left it there, but I don't know if users are really using it, nor why, so I left that option available.
But I always think about removing partial EmuNAND Channel option.