Successful reformatting

I started reformatting my iPod the other night i wanted it mac formatted. Originally it didn't go so well... most of the music wasn't on my iPod (even though it said it was, i think the internal track database f'ked up). I noticed alot of wrong entries on itunes so i decided to try one more time... i deleted all the music of the mac, and then copied it back on (more carefully than before). It worked, my iPod is now playing all my music properly and won't work on a pc (gotta love window's for it's non-compliance of mac, even though windows formatted drives can be read fine by a mac, Why is that Bill?).