I have a dell laptop with windows XP OS. I noticed that all of my four drive partitions (C,D,E,F) are primary type. I installed Partition Magic software and after restart, I cant see my D,E and F partition(only C is visible). partition magic cant load because an error for drive letters and in computer management/disk management I can see that 3 partitions without drive letters. they are hidden now and I need them, please help me. how can I fix them.