Possible to rip Gamecube games for Dolphin?

[TerminalMontage]

I have a copy of Twilight Princess GC, burned on a DVD, not the original GC disc, and I want to play it. I can load it straight from the disc, but how can I take it off the disc? When I check the D: it's as if I put a Wii or GC game in there, so I can't just drag the .gc or files out. Is there a ripping tool for this?