Coloredhacks

Always wanted to know this question about my Jtag and it has not been like this forever, but prob about a year. I can launch a game from either XBN, DL, or just having a disk in my Jtag will boot twice just fine, but the 3rd time I go to boot a game it will always say disk unreadable. Its really only a minor problem but if anyone had a idea of what I could do to fix it just let me know, Thanks!