I have read in quite a number of forums or websites that partitioning in the outer or leading edge of the drive and putting the system partition there leads to lower seek times. for example http://partition.radified.com/ http://www.barefeats.com/hard33.html The difference could be 8-9 msec vs 12-13 msec. I bought a WD caviar 640 GB and read that partitioning in the outer 10-20% leads to quite low random seek times and the performance could very well catch up to Raptors. So my question is this: In windows, normally setting the first partition goes to this leading edge. the rest of the unformatted space can be set later for other partitions. In mac, however, all the partitions are made at the same time (with disk utility). So how do you make sure that you get the first partition to the leading edge or how do you figure out which is which? Or does it work this way in mac that the first partition in the series (lets say you make three partitions of a 320GB drive) is always to the leading edge of the drive? In other words: is the 'first' partition the same as the top partition when using Apple's Disk Utility? is that the outer rim of the drive or the inner hub? Are partitions set up from the outer edge to the inside edge?