David Brostoff <listaddr at earthlink.net> writes: > Could you direct me to where it says a Ti drive is user-replaceable? > AppleCare has insisted to me that the drive is not user-replaceable, > even though the manual has instructions for replacing it. (Just to > make sure, I called twice to get a different opinion.) Try selecting your model at the bottom of the page here. http://www.apple.com/support/diy/faq/ It never explicitly says your warranty won't be voided, but it does say that the replacement part is covered by the warranty. The bottom line is this: if you do it properly, your warranty is fine. If you screw up while doing it, your warranty is void. However, if a service provider screws up while doing it, your warranty is still valid, and they'll fix their mistake.