icloud photos - formatting error

New iMac being setup. Opened photos and went to turn on iCloud Photos and getting this error:

"iCloud Photos is only available on macOS Standard, macOS Extended and APFS formatted volumes."

To check the format of a volume, select the volume in the Finder and choose Get Info from the File menu. The type of volume appears in the Format field.


This is a new 21" iMac with Fusion drive. It is formatted as APFS. Unsure of why I am getting this error and cannot turn on the cloud photo sharing.

iMac, iOS 12

Posted on Sep 27, 2018 5:24 AM

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Posted on Oct 8, 2018 5:49 PM

OK, I just got off the phone with Apple Support and it was much easier than it seems.


First, shut down. Then reboot, and then immediately hold the Command+R, until you see the progress bar, then release.


Then, you should get a screen that has 4 choices - choose the bottom one - Disk Utility.


Select your HD on left and run "First Aid" (first button in center menu). It should take a few minutes to run.


Once complete, restart from apple menu, and sign in as normal. Your iCloud Photos should be working.

26 replies

Nov 29, 2018 4:31 PM in response to Brad2610a

Same problem here. Temporarily fixed using Disk Utilites but it came back weeks later.No reboot during this time. Photos just decided stop working by itself sometime.


My system is iMac 2017 with 1T SSD internal drive so it’s completely irrelavent to FusionDrive issue. Simply a bug in either APFS or iCloud.


Trying to fix again with Disk Utilites and see whether and when it will come back again.

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icloud photos - formatting error

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