The original 1TB HDD in my late 2012 is failing. The Mini is still covered by Apple Care. The OS is installed on a second drive (SSD), and I only use the 1TB spinner as a backup drive so honestly if I lost all the data on the 1TB HDD it wouldn't cause any problems. I assume the best way to get this taken care of is to make an appointment at a local Apple Store (rather than sending it in to Apple)? If that's correct, do they replace the drive while you wait, or am I going to have to leave it? Do they take care of data transfer, or should I clone the drive and wipe it then clone the data back? I am sure that the self-installed second drive (the SSD) will not be a warranty problem, but if anyone thinks otherwise, please speak up.