Dreamcast GD Check Disc and Black Swirl Fix

This is the really rare Sega confidential this called GD Checker. I managed to get a copy of this from a secret source so thanks goes to him. I just cracked the disc for you all. The black swirl fix is my "fix" I found out after hours of frustration. CDI - https://mega.co.nz/#!t1I3QKzS!FNM16GA... GDI - https://mega.co.nz/#!MxwwRTiR!Or8emWJ...