welcome to the forums,
There is no talk of illegal 'back ups' or GC iso's or warez. Ask on some other forum.
To load legal homebrew, you use mini dvd discs, Ritek are a good brand as many have said the work the best. You can load these discs using a AR max pro the one that has a USB mem. card, i think, you should check this out as i may be wrong. Just google it and you'll find a load of sites.
Full size discs are much cheaper/easier to find, so in the long run it's easier to buy a replacement case that can accept full size discs.