copy /b RSBEPM.wbfs + RSBEPM.wbf1 RSBEPM.iso

Here’s a direct answer:

When you properly split Super Smash Bros Brawl for a FAT32 drive, you will not see one single file. Instead, you will see:

But this is less reliable for USB loaders — better to use dedicated Wii tools.

Yes. The five-character game ID for Super Smash Bros Brawl (NTSC-U) is RSBE01 . For PAL regions, it is RSBP01 . For NTSC-J, it is RSBJ01 . The loader reads the ID, not the folder name.