By holroy

2019-02-09 22:21:42 8 Comments

I've tried to install Mac OS Mojave on my Mac Mini (late 2012), but it has Mac OS Extended (journaled) as the file system on the main drive. This link is somewhat inconclusive and refers to retired documents.

So my question is two-folded:

  1. Can I change in-place from Mac OS Extended (journaled) to APFS on my boot disc (and can Mojave boot from APFS)?
  2. If not, how can I install Mojave on my Mac Mini (which currently runs High Sierra)?

Update: I've already tried upgrading, and it failed with a vague error message related to the file system upgrade (which I sadly can't recall).


@Monomeeth 2019-02-09 22:36:56

The internal drives of Macs are converted to APFS when upgrading to macOS 10.14 Mojave and yes, macOS Mojave boots from APFS just fine.

More specifically, when Mojave is installed it will convert any internal drive (including SSDs, HDDs and Fusion/Hybrid Drives) from HFS Plus to APFS.

This is an important distinction as prior to macOS Mojave, only SSDs were converted to APFS, and this explains some of the confusion over time regarding how macOS Sierra, macOS High Sierra and macOS Mojave have managed things as APFS has continued to evolve.

@holroy 2019-02-09 22:48:25

I did already try to upgrade, and the upgrade failed on this file system upgrade. So I need to do something different, in order for it to work. But what, that is the question...

@Steve Chambers 2019-02-09 23:51:01

Add the symptoms of what exactly fails and how to your original question. It could be a file system or HDD/SSD error.

@IconDaemon 2019-02-10 00:56:22

How much free space is on the drive that needs to be updated?

@holroy 2019-02-10 01:26:29

@IconDaemon, There is 654 GB available (out of a total of 999GB) on the main HDD (and even more on the other HDD).

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