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Apple firmware hard drive replacement?

I have to replace the 3TB seagate drive on my iMac 27” 2014 retina. I have Mojave installed on the separate 128GB blade ssd.

Is there a hard drive that will work on the iMac without the fans going crazy? I heard the drive needs to have apple firmware.

Just want to pop a cheap spinning drive inside for storage. I don’t wanna spend the dough on the thermal sensor.

My other option is buying a 1TB ssd but then I would need the thermal sensor.

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The newer iMac’s 2013 onward appear not to need the thermal sensor. The age of the drive you use also is a factor! If you are using a newer generation you’ll be OK as they are using the newest version of SMART services.

I would recommend going with a Seagate FireCuda as the best drive you can get.

I’m not a fan of the higher 3 TB and larger HDD’s as they tend to need more power & cooling than what this system can offer. Besides putting your data at risk. Don’t forget your external Thunderbolt ports are much faster than the SATA III (6.0 Gb/s) interface!

Do make sure your system is not currently setup in a Fusion Drive set. As that will complicate things.

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That's great. Thank you. I have the 128GB ssd as a stand alone boot drive, that originally was the fusion drive coupled with the 3TB.

If going for an SSD, the thermal sensor from OWC would be needed though?

Only new enough HDD's can do without?

da

Make sure you reformat the SSD drive before you use it again.

Both HDD's & SSD' that comply with the newest SMART standard are workable.

da

Thanks. How do I know what the newest S.M.A.R.T. standard is? I am looking at the Samsung EVO 860 and Crucial MX500, do you know if they will work without the sensor?

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This is probably not the best solution but you can use the Macs fan control app to adjust the hard drive fan speed so that it is not noisy after loading MacOS.

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Is this also the case with a late 2012 iMac? I need to replace the HDD and am also worried about fan/temp.

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So a VW bug engine will fit your ford T-bird? Just like them your system is very different than the system being discussed here.

In your case you will need this in-line sensor: OWC In-line Digital Thermal Sensor for Hard Drive Upgrade for 27" iMacs 2012 and Later and you want to follow this guide Sostituzione schermo iMac Intel 27" EMC 2546 Be very careful as its very easy to damage the display if you don't use the special iMac Opening Wheel tool and Plastic Cards and follow the instructions to the letter.

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robert sarà eternamente grato.
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