Is my Unraid usb flash drive failing?

[Endy]

Just wondering if this is a sign that the usb flash drive I'm using for Unraid is dying.

I've been using it for as long as I've had Unraid which is about 3 and a half years and I've had no problems until recently. It seems that whenever I reboot my server the flash drive disappears from the bios and because of that Unraid fails to boot. At that point if I move the flash drive to another usb port the bios picks it up again and boots just fine once it is selected as the boot device again.

[Frank1940]

Make sure that you are using USB2 ports (normally, these have a black plastic inset) rather than a USB3 ports (blue plastic insert).  (Some MB's have issues booting Unraid from USB3 ports.) 

[Endy]

14 hours ago, Frank1940 said:

Make sure that you are using USB2 ports (normally, these have a black plastic inset) rather than a USB3 ports (blue plastic insert).  (Some MB's have issues booting Unraid from USB3 ports.) 

I was sure this wasn't the issue, but then I remembered that I made some hardware changes to my server a few months ago and could no longer use the internal usb port I was using before. None of the usb ports on the back of the case are usb 2.0 and that was where I moved the flash drive to. For the moment I can only try putting the flash drive in one of the front usb ports (that are 2.0) and see what happens.

 

However, it is still a bit weird because I am sure that I must have rebooted the server at least once or twice between when I did the hardware changes and when I recently started having problems.