(Same as Patrick noted above) If you are adding a new SSD to your factory 1TB HD using iFixit's Mac mini HD kit, SWAP the drive positions—so that the SSD is in the original slot connected Apple's SATA cable and the original HD is now in the other bay using iFixit's cable. This issue affects only late-2012 Mac minis that come with a mini-specific build of OS X 10.8.2.