I was trying to partition my macbook pro for bootcamp but was having difficulty so i used idefrag and this did not help so i put in the OS disk and proceeded to try and partition 20Gb for windows there once i had done this every thing on my laptop had done and i am having to re install every thing..... is there any reason why it should do this with out any warning because it really annoyed me and im starting to lose faith in apple. 

could some one fill me in on what im doing wrong???
could some one fill me in on what im doing wrong???