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2stepbay 10-31-2018 05:10 PM

10.14.1 update conundrum
Before leaving for a trip, I cloned my iMac's fusion drive to an external SSD. I'm now using that drive on a friend's similar iMac. No problems accessing the drive, reading/writing etc.

Yesterday Apple released 10.14.1, however, Software Update shows no update available. So I attempted to install the latest version from the App Store. No problems downloading the 6GB installer, however upon installation, the installer would not allow me to designate the SSD drive since it was not formatted for APFS. I realize this is not a SuperDuper problem per se, however curious if anyone has encountered something similar and devised a workaround. I realize Apple's quest to simplify the User experience is at play here. However, not giving me an option to install APFS or not prevents me from upgrading the drive.

As an aside, when I return home next week I'll reclone/update my iMac's drive from the SSD. I don't anticipate running into any problems via the latest SD version. But checking here nonetheless. Thanks

dnanian 10-31-2018 05:12 PM

Sorry - haven't using their installer on an SSD without APFS...

2stepbay 11-06-2018 10:31 AM

I just learned Fusion Drives are now updated to APFS upon Mojave install. Don't remember seeing any Apple notice about APFS compatibility. Is the convert to APFS automatic, or would that be something I would have to select? If the former, seems my SSD drive ought to be APFS as it was cloned from the iMac after the Mojave install. However, Disk Utility indicates the SSD external drive is not APFS. Appreciate any insight. Thanks

dnanian 11-06-2018 10:34 AM

It's all automatic as far as I know. But it wouldn't convert an external to APFS, since you didn't actually run the installer on that drive.

2stepbay 11-07-2018 12:32 AM

Thanks Dave. So to be clear: cloning the Fusion drive to the external would only carry across the APFS if the external drive is formatted for APFS. Is that correct?

dnanian 11-07-2018 07:03 AM

"Carry across the APFS" isn't really the way to think about it. Because we're copying files - not the "disk format".

I would format the external as APFS if the source is APFS.

2stepbay 11-07-2018 09:39 AM

Thanks for the confirmation.

t3rockhall 12-02-2018 08:28 AM

So, I have a new iMac still in the box
I boot from my HFS SD! backup of old Mac
And write everything over to the new mac
Then upgrade the new Mac's OS if needed
Then, when the new Mac is running properly
I should reformat the SD! External drive as APFS
And then back up the new Mac to the external drive

Or is it unnecessary to reformat the drive?

dnanian 12-02-2018 08:31 AM

No. You should migrate from the backup (see

Then, yes, I would reformat the backup as APFS.

t3rockhall 12-20-2018 09:55 AM

1 Attachment(s)
It isn't a choice.

dnanian 12-21-2018 09:30 AM

Show all devices in the view menu, then select the drive hardware (above the volume).

t3rockhall 12-22-2018 04:43 PM

1 Attachment(s)

Originally Posted by dnanian (Post 34393)
Show all devices in the view menu, then select the drive hardware (above the volume).

And I get the same choices.

dnanian 12-22-2018 05:57 PM

You have to change the partition scheme to guid in the 2nd pop-up before selecting the format in the first. Because: terrible UI.

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