I already tried to wiiscrubb this disc.
Tried with both Brickblocker and with that "Trucha Signer" method, none works for me.
I get to the screen in disc channel that I see the "Super Mario Smash Brawl" and then I start the game and Blackscreen.
I fight for hours with this last night, Wiiscrubber won't help you. If you decrypt it, the whole Partition 2 is 7GBs, its has 2 Dummy files. Called dummy1.dat and dummy2.dat, just filled with 00s. 200mb of 00s that is.
Also one called "Border.dat" so I think Nintendo have some check that notice if these files been modified aka. empty it.
Wiiscrubber actually works it fills junk data with FFs and 00s (Data, data = size so it will still be the same) and therefor when you Winrar it, its only THEN you gain the benefits of wiiscrubber. Since winrar can Pack FFs and 00s alot better than normal data.
I think we can rip this file out, DOUBUTSUGO_JP_BOY.BRSAR, It seems to be the Japaneise audio file.
What I actually think takes so much space its all the movies. Its loads of them and they are big, SonicMovie.thp is freaking HUGH!
EDIT: Found SnakeMovie.thp to be extremly big too. Seems just fair that this game is suppose to be a dual-layer. The Dummy files is just to file out space to make it full DL disc, I keep on searching for a soultion.