What is the max sd card storage a homebrewed Wii can use?

[SeriousGamer42]

What is the max sd card storage a homebrewed Wii can use?

I am wondering about the question above as I am considering getting a 128 Gigabyte sd card for my homebrewed Wii.
If anyone knows the answer, that would be great. If not that is okay.

[mbc07]

The Wii officially supports only SDHC cards, which maxes out at 32 GB. Anything bigger will come pre-formatted to exFAT, which the Wii doesn't support. With 3rd party tools it's possible to format disks of up to 2 TB with FAT32, so theoretically the Wii might accept a bigger card that has been formatted to FAT32, but I personally haven't tested that...

[Nintendo Maniac 64]

The problem is that certain games do not support SD cards greater than 2GB (non-SDHC cards, such as the card that came with the original launch 3DS) even when used with an updated console and/or when launched through a modded console.

For example, both Excite Truck and Smash Bros Brawl do not support SDHC, though I believe the latter has mods that enable SDHC support (but the former you're SOL on if you want to take full advantage of its custom per-track music feature, though it being limited to MP3 makes it annoying to create seamless-looping songs since MP3 is not a gapless format like any of the open-source alternatives e.g. vorbis, opus, flac; even aac has similar issues but to a lesser degree)

[MaziRoddy999]

What is the max sd card storage a homebrewed Wii can use?

I am wondering about the question above as I am considering getting a 128 Gigabyte sd card for my homebrewed Wii.
If anyone knows the answer, that would be great. If not that is okay.

I have soft modded 4x different Wii's w/ the Homebrew Channel since 2021 and the largest capacity of microSD [w/ an adapter] I am using right now is 512GB which is formatted to FAT32 by way of an app called "FAT32format GUI (GUIFormat) v1.0.1.0".

[MaziRoddy999]

The problem is that certain games do not support SD cards greater than 2GB (non-SDHC cards, such as the card that came with the original launch 3DS) even when used with an updated console and/or when launched through a modded console.

For example, both Excite Truck and Smash Bros Brawl do not support SDHC, though I believe the latter has mods that enable SDHC support (but the former you're SOL on if you want to take full advantage of its custom per-track music feature, though it being limited to MP3 makes it annoying to create seamless-looping songs since MP3 is not a gapless format like any of the open-source alternatives e.g. vorbis, opus, flac; even aac has similar issues but to a lesser degree)

Wii games titles whose ISOs exceed past 2GB (which is most, if not all of them) have to be converted to "wbfs" format and there's a tool called "Wii Backup Manager" that helps you do the conversion. This is all after you've converted the SD card to FAT32 format.

[Nintendo Maniac 64]

Wii games titles whose ISOs exceed past 2GB (which is most, if not all of them) have to be converted to "wbfs" format and there's a tool called "Wii Backup Manager" that helps you do the conversion. This is all after you've converted the SD card to FAT32 format.

You misunderstand what I was saying, and your statement itself isn't quite accurate either.

The file size limit for FAT32 is 4GB (technically a teeny bit below it), and it's FAT16 that is limited to 2GB files.

But what I was talking about was for games that use the SD card themselves for various in-game content, not for loading the game ISO/wbfs itself via a USB loader or the like—again, I point to Excite Truck and Smash Bros Brawl, and I recently found out that I believe Endless Ocean (the first game) also has the same limitation of being limited to 2GB SD non-HC cards for its in-game content.