Drive issues after macOS 13.2 update

I updated my Mac Studio to macOS Ventura 13.2 last night.

This morning neither of my external hard drives would show up in Disk Utility or in the Finder. The drives spun up and did not sleep. An SSD in the same enclosure as one of the drives always mounted normally.

I checked all 6 Thunderbolt ports, different Thunderbolt 4 cables, shut down and restarted several times. Etrecheck Pro found no problems.


Then I found this thread:

macOS Ventura reboot - Apple Community

and the helpful reply by P. Phillips, which reminded me of Safe Boot.


1 - Restart in Safe Mode. This will perform a Disk Repair, clear cache files and only load Apple Software, extensions and fonts. The boot up will be slow and can take some time - Normal.

2 - Safe Mode will also eliminate Third Party Software, extensions and drivers from loading 

3 - Does the issue present in this mode ?

4 - Sometimes a Safe Boot followed by a Normal Boot will just put things right.


In Safe Mode, both external drives mounted normally. After a normal reboot, the two drives again mounted normally. So it seems that whatever disk repair the OS does during a safe boot fixed my problem.


Mac Studio Ultra Mac13,2 updated to macOS 13.2

OWC Ministack enclosure one with a 14T hard drive, second OWC Ministack with a 14T hard drive and a 4T SSD.

Apple 3m Thunderbolt 4 cables, one for each enclosure.

Mac Studio, macOS 13.2

Posted on Jan 26, 2023 2:50 PM

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Posted on Mar 30, 2023 3:09 PM

AmedeoCiminnisi wrote:

It IS an Apple issue. It's been three months for me. Where is the fix for this?

My understanding is that macOS 13.2.1 fixed the issue for most people. OWC verified this for their drive enclosures, and that has been my experience.


I installed macOS 13.3 on 03/28/2023, and the issue of drives not mounting did not return.


Note: Shortly after a restart, I am still seeing a Notification of a hard drive in one of my OWC Ministack boxes being ejected improperly. When I check in Finder, the drive is mounted (since 13.2.1). This did not happen after I installed macOS 13.3, but did when I restarted later in the day for the Studio Display update.

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Drive issues after macOS 13.2 update

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