The FAT support has raised a lot of repeated questions, so here's a FAQ about that:
Q: Can it play .iso files directly?
A: No. Only .wbfs files can be used. To convert from .iso to .wbfs use the wbfs_file utility.
Q: Isn't FAT limited to 4GB file size?
A: Yes, that's why the files are splitted to 2GB chunks.
The files are named gameid.wbfs, gameid.wbf1, gameid.wbf2,...
Similar to how the a .rar archive can be split to multiple files (.rar, .r01, .r02,...)
Q: If FAT size is limited to 4GB, why is the .wbfs file splitted to 2GB chunks instead of 4GB?
A: Because of the limitations in the FAT Library that is used (libfat).
Q: What about the file size, games on WBFS partition are scrubbed / compressed, will it take more space on a FAT partition?
A: No, it will take the same space because the files are not in .iso format but instead .wbfs format, which uses the same scrubbing / compression method as on a WBFS partition, actually the file format is the same as the format of the WBFS partition. And to be even more accurate, the .wbfs files will take even less space, because the wbfs block size will be smaller too. (The size depends also on the selection which partitions are copied - all or only game)
Q: I have copied the .wbfs files to my usb drive but the loader doesn't see them?
A: The files have to be copied to the \wbfs folder on the FAT partition, like this: D:\wbfs\GAMEID.wbfs
Q: Can I extract all the games from a WBFS partition to .wbfs files?
A: Yes, use this command:
wbfs_file.exe W: extract_wbfs_all D:\wbfs
Where W: is your WBFS partition and D:\wbfs is the FAT partition on USB (or on local hard-disk)
Q: How to convert all the .iso files to .wbfs files in one step?
A: Open up CMD where your iso files are and run:
for %i in (*.iso) do wbfs_file.exe %i
Q: How long does it take to convert one game to .wbfs?
Depends on hard drive speed and (scrubbed) game size. It should take the same time as copying a file. That means a couple of seconds for a game like WiiPlay which uses only about 100MB and a couple of minutes for games that take up 4GB...
Q: Is there any advantage using FAT rather then the old way?
A: no.
Copied to first post as well:
http://gbatemp.net/index.php?showtopic=147...mp;st=0#fat-faq