Apple has determined that iMacs produced between May and July 2011 that mount a Seagate 1TB hard drive are defective and should be replaced. Read on to find out what you should do.
Apple has detected that a ‘small’ number of Seagate 1TB hard drives, mounted in 21.5-inch and 27-inch iMacs between May and July 2011, may fail under some circumstances .
If you’re an iMac owner, you can go to any Apple Retail Store or Apple Authorized Service Center and they’ll replace your hard drive at no charge. Please make a backup first to restore your system later. If you registered your iMac, Apple probably already contacted you. That’s one reason why it’s important to register our products: Apple can contact us directly and personally if there’s a problem with our product.
If you don’t know if your iMac is in the program, look for the serial number in the apple menu, About this Mac , and where the OS X version appears double-click it, or you’ll find it under the base, that’s your serial number. Enter it on this website to find out. According to Apple’s website, you’ll have to reinstall the operating system yourself from the disks.
By the way, if you were thinking of changing your hard drive for another one, check out this post by Diego. Not all drives are compatible with the latest iMac.