TrueNas error "USB disks with non-unique serial numbers"

McOz

As per title, anyone else getting this error or know a work around?

12GB ME Mini
4x Crucial 2TB drives

support1

Hi there, if you install Truenas on EMMC, please try to install it twice. Here is tutorial on how to install truenas https://url.bee-link.cn/uRVH

McOz

Thanks for the response, though this doesn’t address my issue. I’ve successfully installed TrueNas on the MMC, and when creating the data pool with 4 disks attached (slots 1-4) I get the warning “Warning: There are 2 disks available that have non-unique serial numbers. Non-unique serial numbers can be caused by a cabling issue and adding such disks to a pool can result in lost data.”:

Image description

I’m wondering how to resolve this safely.

support1

Step-by-Step Fixes

Verify Drives Outside TrueNAS (Critical First Step)
Boot a Linux USB (e.g., Ubuntu Live) and run:

bash
lsblk -o name,model,serial
If serials show correctly: TrueNAS is misreading due to drivers/enclosure.

If serials still duplicate: Hardware issue (enclosure/controller fault).

Swap Hardware Components
Try different cables/SATA ports.

Test with 1–2 drives first: If the error disappears, add drives incrementally to isolate the faulty bay/cable.

Test Hardware Individually
Connect drives one-by-one directly to the Mini PC’s internal SATA port (if available).

If serials show correctly individually → The multi-bay enclosure is the culprit.

Update Firmware/Drivers
Please press delete key as soon as you turn on the PC, so that you can go to BIOS. Please send us a picture of the Main page.
We will check if you need to update the BIOS.

For USB enclosures: Update controller firmware (if available).