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Question: High Sierra & Fusion Drives

When will Apple update MacOS High Sierra so that the new file system will work with a Fusion Drive?

I know that High Sierra works well with a Fusion Drive (as it's doing on my iMac right now), but that the old file system can't be converted to the new, more secure, efficient file system yet on a Fusion Drive.

I plan to buy a new iMac, and love the affordability of the Fusion Drive. But I don't want to buy one with a Fusion Drive if High Sierra won't eventually be updated so that the new file system will work with a Fusion Drive.

iMac, macOS High Sierra (10.13.2)

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Eventually, macOS will support APFS on Fusion Drives and hard disk drive. As to exactly when that will happen is anyone guess. Personally my suggestion is to purchase it and use it with HFS+ as I am doing and convert when Apple is ready to do the conversion.

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Dec 19, 2017 4:55 PM in response to Kevin852 In response to Kevin852

Eventually, macOS will support APFS on Fusion Drives and hard disk drive. As to exactly when that will happen is anyone guess. Personally my suggestion is to purchase it and use it with HFS+ as I am doing and convert when Apple is ready to do the conversion.

Dec 19, 2017 4:55 PM

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Dec 19, 2017 5:07 PM in response to berkinet In response to berkinet

berkinet wrote:


Actually, fusion drives are supported... but, not for point-and-click users.

see: APFS Fusion

I think you've misunderstood…

If you installed a beta version of macOS High Sierra, the Fusion Drive in your Mac may have been converted to Apple File System. Because this configuration is not supported in the initial release of macOS High Sierra, we recommend that you follow the steps below to revert back to the previous disk format.

As far as the "second option", that reformats the drive to HFS+ Journaled. It's just a second method to revert back to HFS+.

Dec 19, 2017 5:07 PM

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Question: High Sierra & Fusion Drives