Hi. I'm new to the boards and i'm having a huge problem but i really dont know what else to do. Everytime i start my white 13" macbook, it boots into boot camp, that is, windows. however, when i hold the option key down and chose my mac installation, the apple logo comes up and the loading indication (the spinning circle thing) is displayed under it for about 30 secs, then it just restarts. i have tried using the OSX installation disc and the disk utility to repair the partition but then it keeps getting an error. and i also try to mount the drive but that fails also. I can load into windows xp perfectly fine and i have downloaded some recovery software that runs from windows to retrieve mac files from corrupted partitions. and the software works. I have tried single user mode and safe mode but the same thing happens as when i try to boot into OS X. I also have tried disk warrior but every time i try to boot from it, the same thing happens as when i try to boot from my mac installation and it just restarts. Any ideas? i really dont have any of my software installation cd's and would really prefer not installing a clean version of OS X as i have had to do that before. Any method of repairing it?