Apple Restricts Hard Drive Replacements on New iMacs
Hard drive from Early 2011 iMac (Source: iFixit) As
noted by Other World Computing, Apple has implemented a new temperature sensor system on its latest iMac models that significantly hampers the ability of users to replace their original hard drives in the case of failure or a desire to upgrade. Without the custom 7-pin hard drive cable and proprietary firmware included on stock hard drives in the new machines, the new iMacs' fans spin to full speed and the machines fail to pass the Apple Hardware Test.
For the main 3.5" SATA hard drive bay in the new 2011 machines, Apple has altered the SATA power connector itself from a standard 4-pin power configuration to a 7-pin configuration. Hard drive temperature control is regulated by a combination of this cable and Apple proprietary firmware on the hard drive itself. From our testing, we've found that removing this drive from the system, or even from that bay itself, causes the machine's hard drive fans to spin at maximum speed and replacing the drive with any non-Apple original drive will result in the iMac failing the Apple Hardware Test (AHT).
As the report notes, the change does mean that anyone seeking to replace the hard drive in a new iMac will have to go through Apple, limiting options and increasing costs.
It is not a matter of "if" but rather a matter of "when" your hard drive is going to fail. We preach this all the time in regards to having a proper backup strategy in place to prepare from when that failure happens. But it seems now, that when that happens to the main drive on your iMac, you're left with two options - buy a new drive from Apple and have them install it via one of their Authorized Service Centers, or enjoy the rather large Apple logoed paperweight on your desk. Want a 3.5" drive larger than 2TB? Too bad - Apple doesn't offer them.
Apple has not officially supported do-it-yourself hard drive replacements on the iMac for many years, but many users have still elected to take on the task themselves or have others not specifically authorized by Apple perform the swap for them.
Popular Stories
Apple is planning to launch new MacBook Pro models as soon as early March, but if you can, this is one generation you should skip because there's something much better in the works.
We're waiting on 14-inch and 16-inch MacBook Pro models with M5 Pro and M5 Max chips, with few changes other than the processor upgrade. There won't be any tweaks to the design or the display, but later this...
Wednesday February 11, 2026 10:07 am PST by
Juli CloverApple today released iOS 26.3 and iPadOS 26.3, the latest updates to the iOS 26 and iPadOS 26 operating systems that came out in September. The new software comes almost two months after Apple released iOS 26.2 and iPadOS 26.2.
The new software can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update.
According to Apple's release notes, ...
Apple plans to release an iPhone 17e and an iPad Air with an M4 chip "in the coming weeks," according to the latest word from Bloomberg's Mark Gurman.
"Apple retail employees say that inventory of the iPhone 16e has basically dried out and the iPad Air is seeing shortages as well," said Gurman. "I've been expecting new versions of both (iPhone 17e and M4 iPad Air) in the coming weeks."...
Apple plans to launch a rebranded "Sales Coach" app on the iPhone and iPad later this month, according to a source familiar with the matter.
"Sales Coach" will arrive as an update to Apple's existing "SEED" app, and it will continue to provide sales tips and training resources to Apple Store and Apple Authorized Reseller employees around the world. For example, there are articles and videos...
The MacBook Air is Apple's most popular laptop – a thin, fanless machine that wields quiet power thanks to the efficiency of Apple silicon. While the M4 model isn't exactly old, attention is already turning to its successor.
Apple doesn't telegraph new product launches ahead of time, but we can draw a surprisingly clear picture of what to expect by looking at Apple's silicon roadmap,...
