Older builds without the restriction had a lot of inaccuracies with the HLE IOS implementation that caused various issues in several Wii titles. The NAND is now enforced to 512 MB like on a real Wii to prevent those problems and currently there's no way to bypass that restriction.
If you somehow manage to overfill you NAND on current Dolphin versions, most Wii games will refuse to go past their title screen until you go to the Wii Menu and delete things to free space. Wii Menu itself will also deny you from accessing anything other than the data management screen if the NAND is full...
If you somehow manage to overfill you NAND on current Dolphin versions, most Wii games will refuse to go past their title screen until you go to the Wii Menu and delete things to free space. Wii Menu itself will also deny you from accessing anything other than the data management screen if the NAND is full...
Avell A70 MOB: Core i7-11800H, GeForce RTX 3060, 16 GB DDR4-3200, Windows 11 (Insider Preview)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)