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Post-Ventura 13.2 installation USB storage not attaching and some cause kernel panic

Has anyone else encountered this? 2019 Mac Pro.


I've submitted 5-6 problem reports after seeing this kernel panic predictably repeat. I do not know if the problem is Ventura 13.2 or third-party software (e.g., BitDefender) now causing a kernel panic after Ventura 13.2 update. All I know for sure is this problem did not happen before today, and I performed the Ventura 13.2 update last night.


I first noticed the problem when my USB-C-attached two-disk RAID 1 was not attached and it was not recognized under any circumstance after a standard system boot. In recovery mode, the USB RAID was recognized without issue, and a SanDisk Cruzer 4 GB USB-A I attached worked normally.


When I tried to attach the Cruzer after a standard system boot, it caused an immediate system freeze and hard reboot due to a kernel panic.


In the last report sent in, I included these comments after testing other USB storage devices.


"After reporting this kernel panic multiple times, I have additional test cases to report. To summarize past results:

1) OWC Mercury Elite Pro Dual RAID Storage Enclosure with USB (10Gb/s) + 3-Port Hub (OWCMEDCH7T00O), attached with USB-C connection, loaded with two (2) 2.0TB Seagate BarraCuda 3.5-inch SATA 6.0Gb/s (ST2000DM008): recognized during recovery mode, not recognized after standard system boot.

2) SanDisk Cruzer 4GB (SDCZ36-004G) , USB-A connection: recognized during recovery mode, causes this type of kernel panic and hard reboot when attached after standard boot. It is not a particular device; I have two of these USB sticks, one formatted APFS one formatted ExFAT, and the same kernel panic happened each time.


And to report two new discoveries:

3) Seagate Portable drive 5TB (SRD0NF1), attached with USB-A connection: recognized during recovery mode, not recognized after standard system boot. Does not cause kernel panic, so USB-A mode alone is not the root cause. Can not rule our USB + flash as the cause? This device has an HDD internal, and I don't have an USB-attached SSD to test.

4) SanDisk Ultra 64GB microSD (6105CRDCF0), USB-A connection via Transcend USB3 adapter: recognized during recovery mode, caused this kernel panic report.


PCI-Express-attached storage does not appear to be affected at all. I have an OWC Accelsior 4M2 PCIe M.2 SSD expansion card, 4 x 480 GB P12 NVMe modules. Does not appear to be affected in any way by this issue."

Mac Pro, 13.2

Posted on Jan 24, 2023 6:15 PM

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Question marked as Top-ranking reply

Posted on Jan 29, 2023 7:48 PM

I discovered and fixed the problem. It was caused by old kernel extensions for my OWC RAID we’re still in the /Library/Extensions. These extensions weren’t listed in the Extension section of System Prefs -> Privacy & Security, so that is something Ventura failed to scan and identify. Ventura 13.0 and 13.1 were still attempting to load these extensions without a problem. It was not until 13.2 the kernel extensions were causing a conflict with IOKit. Removing the kernel extensions returned everything to normal.

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Question marked as Top-ranking reply

Jan 29, 2023 7:48 PM in response to georgeunperson

I discovered and fixed the problem. It was caused by old kernel extensions for my OWC RAID we’re still in the /Library/Extensions. These extensions weren’t listed in the Extension section of System Prefs -> Privacy & Security, so that is something Ventura failed to scan and identify. Ventura 13.0 and 13.1 were still attempting to load these extensions without a problem. It was not until 13.2 the kernel extensions were causing a conflict with IOKit. Removing the kernel extensions returned everything to normal.

Post-Ventura 13.2 installation USB storage not attaching and some cause kernel panic

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