OWC Thunderbolt Dock not mounting on macOS Ventura

Long time Mac user here (since 1996).


I bought last September an OWC Thunderbolt Dock to go with my new iMac M1. Along with the dock, I got two OWC Envoy Pro SSDs, one 2TB and a 4TB.


At the beginning, everything worked fine. Then I believe there was an OS update and noticed a few days later that the external SSDs did not mount at all.


Checked the Finder prefs, and external disks are supposed to mount on desktop and also appear in sidebar, which they do not do anymore. Checked the Hardware section in About This Mac/System Information and it says no devices connected.


I launched Disk Utility and they didn't show up, so could not mount them manually.


Thinking it might be the OWC device, sent it in to be checked under warranty but everything is normal, they checked the cables, the device the power supply, everything is as it should be.


Is there a System .plist somewhere I can trash or something else I can do to make this work?


As of now, the SSDs only appear and work if I plug them directly into the Thunderbolt ports in the iMac, but the dock is now useless and I certainly want to be able to use it!


The problem seems to be between the dock and the iMac.


Can anyone help? Thank you in advance.


P.S.: Also noticed that in Ventura, when I download files, there will be two files, one with 0 bytes while the other with the suffix -1 contains the real deal. It's nothing bad, but it is annoying.

iMac 24″, macOS 13.2

Posted on Apr 1, 2023 8:58 AM

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Posted on Apr 2, 2023 2:05 AM

Solution found! But this will probably be the stupidest ID-18 error you will read.


I had used the wrong port all this time! The Thunderbolt port in front

has an icon and I had always taken it mistakenly for a Thunderbolt

monitor-only port. I watched a video of a review and the icon was obviously

representing a Mac, not a monitor because that's where they plugged in! In my defence, I DO have to change my glasses... What I wonder is how it worked for such a long time while connected from the wrong port... Thanks for reading.

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2 replies
Question marked as Top-ranking reply

Apr 2, 2023 2:05 AM in response to Diane Benoît

Solution found! But this will probably be the stupidest ID-18 error you will read.


I had used the wrong port all this time! The Thunderbolt port in front

has an icon and I had always taken it mistakenly for a Thunderbolt

monitor-only port. I watched a video of a review and the icon was obviously

representing a Mac, not a monitor because that's where they plugged in! In my defence, I DO have to change my glasses... What I wonder is how it worked for such a long time while connected from the wrong port... Thanks for reading.

Apr 1, 2023 9:16 AM in response to Diane Benoît

Edited to add info: Long time Mac user here (since 1996).


I bought last September an OWC Thunderbolt Dock to go with my new iMac M1. Along with the dock, I got two OWC Envoy Pro SSDs, one 2TB and a 4TB.


At the beginning, everything worked fine. Then I believe there was an OS update and noticed a few days later that the external SSDs did not mount at all.


Checked the Finder prefs, and external disks are supposed to mount on desktop and also appear in sidebar, which they do not do anymore. Checked the Hardware section in About This Mac/System Information and it says no devices connected.


Tried both Thunderbolt ports, nothing doing.


I launched Disk Utility and they (dock + SSDs) didn't show up, so could not mount them manually.


Thinking it might be the OWC device, sent it in to be checked under warranty but everything is normal, they checked the cables, the device the power supply, everything is as it should be.


Is there a System .plist somewhere I can trash or something else I can do to make this work?


As of now, the SSDs only appear and work if I plug them directly into the Thunderbolt ports in the iMac, but the dock is now useless and I certainly want to be able to use it!


The problem seems to be between the dock and the iMac.


Can anyone help? Thank you in advance.


P.S.: Also noticed that in Ventura, when I download files, there will be two files, one with 0 bytes while the other with the suffix -1 contains the real deal. It's nothing bad, but it is annoying.

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OWC Thunderbolt Dock not mounting on macOS Ventura

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