I currently have a WinXP machine set up with 3 external harddrives and 2 internals that are partitioned. As a good boy, I have redirected the My Documents folder in WinXP away from the default position to a separate partition and I have my music also on a separate partition on an external harddrive in case [as can happen] WinXP dies. I am getting a MBP and would like to know: Is it common to partition the internal harddrive? Do people place the Documents folder on a separate partition? If I ever [God forbid] had to reinstall the operating system would it wipe all of the stuff in the Documents folder (and likewise for Photos, Music, etc)? Thanks for your help.