hi everyone. i recently successfully installed vista basic on my MacBook Pro (2.5 GHz Intel Core 2 Duo, 4 GB 667 MHz DDR2 SDRAM, Mac OS X v10.5.6 after latest updates) using Boot Camp. Initially I allocated 60 GB to vista and saw that vista only took up ~20GB. Since I will mostly be using Mac OS X, I decided to change the windows partition to 40 GB. Following the Boot Camp Installation & Setup Guide pdf on Apple's website, as I had been doing for vista installation, I used Boot Camp Assistant to partition the disk again to reinstall Windows. I restored the partition to the Mac OS X partition after Boot Camp Assistant warned me that it would permanently delete the contents of the Windows partition. The 2 partitions have now apparently become 1 but my Macintosh HD partition (163.3 GB) is now 23 GB smaller than what I started out with (186 GB)! When i open Disk Utility and click on Macintosh HD, it lists "Capacity: 186.0 GB" but "Available: 163.3 GB". What happened to this 23 GB chunk of space?!?! I read somewhere that this requires a full re-installation of Leopard before I install Vista again! Is this true? Would someone please tell me: 1) what exactly happened to the 23 GB and what the current situation with my mac is, and 2) how to fix it. Is there a way to fix it without resorting to a full Leopard reinstallation? This would be a problem as my mac didn't come with an installation DVD since it was part of a bulk order. Please note that I am not that proficient when it comes to technical details of computers. I would appreciate a dumbed-down step-by-step set of instructions. Thanks in advance!