Help Needed: Second Disk Not Detected on Boot in Proxmox

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SmartProxy

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Apr 7, 2025
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Hi everyone,

I’m experiencing an issue with my Proxmox host where my second disk (used for data, not OS) isn’t detected immediately after boot. The disk is a 2.5" Crucial MX500 1TB SSD connected via a SATA-to-USB adapter, and its partition is formatted with XFS.

What’s Happening:

After booting, the disk doesn’t appear automatically (not visible in the Web GUI, ~lsblk, or ~lsusb).

If I disconnect and reconnect the USB connection, the disk becomes visible.

However, this manual reconnection isn’t a viable long-term solution; I would prefer it to work after a reboot.

What I’ve Tried:

I attempted to simulate the unplugging and replugging of the device using these commands:

Code: 
echo -n "0000:00:14.0" | tee /sys/bus/pci/drivers/xhci_hcd/unbind
echo -n "0000:00:14.0" | tee /sys/bus/pci/drivers/xhci_hcd/bind
Unfortunately, these commands didn’t have any effect on regaining drive visibility.

I also added usbcore.autosuspend=-1 to the GRUB kernel boot options, but that didn’t resolve the problem either.

My fstab entry includes the nofail parameter because otherwise it would get stuck:

UUID=839c9e5f-097f-457c-b04e-33fa1bb9bd0e /mnt/pve/MX500 xfs defaults,nofail 0 0

My Questions:
How can I make the USB-SATA SSD visible after rebooting?

Has anyone experienced a similar issue where a disk connected via a SATA-USB adapter is not detected on boot?
Are there alternative methods to simulate a USB disconnect/reconnect via software that might help resolve this issue?

Any additional suggestions or troubleshooting steps would be greatly appreciated.



Thank you in advance for your help!
 
Is this a cheap-o SATA-to-USB adapter in a hacky-do rig setup?

I have experienced problems with that in home projects - with more than one adapter - and the solution is to spend a good $30-$50 on a quality, name-brand adapter that has excellent reviews.

I had a good experience with one from Sabrent. I wouldn't trust any of the loose, open-air adapters, regardless of brand - get one that's enclosed or upright.
 
Posting this separately because these are affiliate links, but if I were in your situation, I would try one of these:
In the past I would have recommended other brands more strongly, but most of the other players have left the market and since I have personally owned a Sabrent and it was rock-solid for me, I'll suggest it.
 
Last edited:
SmartProxy said:
I mean I don't have a Sabrent but I have one with good reviews...
https://www.savio.net.pl/en/product/sata-f-usb-3-0-m-adapter-for-2-5-drives-savio-ak-38/
Click to expand...
Don't see any reviews on that polish site. On amazon that exact product is not sold, but what appears to be an "updated" version does appear:
USB to SATA Adapter for Hard Drive AK-69 25cm Brand: Savio which has NO reviews.

SmartProxy said:
Does anyone have other suggestions for improving my situation?
Click to expand...
Almost certain - you need to get a different adapter.
You could try changing the USB port used (maybe even try a USB 2 one) and see if that changes anything.

Good luck.
 
gfngfn256 said:
Don't see any reviews on that polish site. On amazon that exact product is not sold, but what appears to be an "updated" version does appear:
USB to SATA Adapter for Hard Drive AK-69 25cm Brand: Savio which has NO reviews.


Almost certain - you need to get a different adapter.
You could try changing the USB port used (maybe even try a USB 2 one) and see if that changes anything.

Good luck.
Click to expand...
Thanks. I am using the Gmktec G3 with N100 and 32GB RAM. I think that I only have four USB3.2 (Gen1)
 
SmartProxy said:
I think that I only have four USB3.2 (Gen1)
Click to expand...
Well you can only try the ports you have available! You may have luck using a port on the other side of the machine - since possibly it uses other cables/controller.

You could check for BIOS settings concerning USB settings, maybe something will help you there. (Always powered etc.).

Another thing you can try checking in BIOS - is the drive/adapter correctly recognized, look in the boot options for that one. You may need a disk that is bootable for that one (but not for sure).

You maybe experiencing some type of power-draw issue during boot. What happens if you connect the drive after boot, so that it is correctly recognized, & then reboot (as in REBOOT but not shutdown the PC)? My thinking: maybe the fact that the M/B is constantly "powered on" will effect the drives recognition. Give it a try if you haven't already.

As already stated - a different adapter will probably do the trick.

Good luck.
 
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