Last year, Apple announced that a “small number” of 1TB Seagate hard drives used in 2011 iMacs could fail under certain conditions, and were eligible for a free replacement. Now Apple’s extended that program to all iMacs sold between October 2009 and July 2011.
According to the new support page, if you have a 21.5 or 27-inch iMac with a 1TB Seagate hard drive, Apple or an Apple Authorized Service Provider will replace the hard drive free of charge. They’ve even included a handy little form to figure out if your iMac is affected. (My 2009 27-inch iMac luckily isn’t).
One thing to keep in mind is that you don’t necessarily have to bring your iMac back to the Apple Store: in some areas, if you contact an AppleCare representative, you can take advantage of an in-office or home repair option, so if you are going to get your hard drive replaced and don’t want to lug forty pounds of aluminum and silicon to your local Apple Store, ask about this option.