What GHz to pick.
I need to replace my bad iMac EMC 2389 hard drive. I want to use your upgrade kit IF174-031-3 and I do not know what GHz to chose. Please help
Update (06/16/2019)
Sorry that should be EMC 2389
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You’re between a massive rock and a hard place on this one, since you own a 2010 :-(. These do not support SATA III (added in 2011) and NONE of the current production drives support it anymore (outside of Seagate, but you need to check the datasheet). As such, you need to find an older NOS drive with autosense from WD or HGST if you do not want to use a Seagate drive.
This was put to bed for good on the 2011 which shipped with a SATA II drive (with SATA III support in the EFI 1.6 update) but had it at the chipset level ready to be activated. If you run into a problem finding drives in the future and get a used 2011-12, the 2011 edu system (EMC 2496) may still be capped at SATA II and cannot take an HDD/SSD setup.
The problem you run into now is if it fails, your refurbished replacement will probably be one of those modern drives without autosense in 1-2 years, so you can’t reliably RMA these drives if it fails :-(. You’re going to be in deep trouble should the drive fail and they also drop the autosense hardware on the 3.5” drives.
In addition to having to hunt down a hard drive from a limited pool that remain in production (or WD/HGST NOS), you will also need an external sensor since Apple relied on the diagnostic port for temperature sensing and these ports are increasingly being deleted or disabled/locked out (2016+ Seagate). Once you secure one of these drives, refer to this guide.
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Are there any options? SSD?
I made a slight error myself. The majority of drives no longer support legacy standards other then Seagate for the time being, but you need the external sensor as they have been locking out the diagnostic port for a few years (I think since 2016). I have no faith they'll keep it around much longer.
Samsung SSD's are the only viable SSD left. Nobody else seems to have an advertised drive that will work.
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I was able to successfully replace the hard drive with the kit sold on ifixit.com. The kit contained all the parts to resolve the various issues you stated. The online instructions were spot on and easy to follow. I got the new SSD drive formatted and the OS installed at my local Apple store. The genus bar technician was impressed with the speed of the drive and gave me a few tips to improve it even more. New life for my personal favorite computer.
由 Bill LeJeune 完成的