回答“Defragging Mac OS X hard drive”All the defrag programs look good, but I wasn't wanting to pay anything for this, and I didn't have a external drive I could back up to. So what I did instead was to zip up all the data files I had on the laptop (ie everything other than programs) then I copied them to a desktop. This took me from about 35GB free to over 90GB free space on the drive. The boot camp utility was then able to properly format the 15GB partition I wanted. And then I copied everything back. I'm not entirely sure how boot camp partitions drives, whether it is in contiguous blocks or not, so this may work all the time, or perhaps not.
回答“What's the best way to damage an optical drive?”I can second this. I have several friends that work for apple, including one in the laptop department, and it is by far the biggest problem they come across with the drives on mac books.