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Unable to load unraid after boot menu

Featured Replies

Hello,

I've recently updated my bios and tried to restart the machine after setting all the bios settings back to the way it was.

When choosing to start unraid with Gui, I see that it stops after this section:

Waiting up to 30 sec for device with BOOT UNRAID to come online ... Umount: /dev: target is busy.

Umount: /: not mounted.

Not found - press ENTER key to reboot...

I've tried changing various settings in bios to see if anything would change, but didn't have any luck.

I've also checked the usb stick to verify that the name is set to UNRAID.

Would you know how I can address this?

PXL_20260215_005127873.jpg

Solved by iForeverNoob

  • Community Expert

Do you have a current backup of your Unraid flash drive?

  • Community Expert

See if you can use that same flash drive as it is to boot another computer. That will help see if the problem is the flash drive or the computer you are trying to boot.

  • Author

I've ordered another usb drive to try with a backup copy.

I've plugged the usb into another machine and it looks like this one is able to run it. I assume this means there's an issue with my main machine somewhere? If so, is it possible to pinpoint where?

PXL_20260215_031006995.jpg

  • Community Expert

Have you done memtest?

  • Author

I haven't yet, but I'm running it now

  • Author

The first run shows that it was passed. I'll keep running to verify that it's good. Would there be any other checks that can be done?

  • Community Expert

Also worth testing if a different flash drive using a stock install boots.

  • Author
  • Solution

Hi, thanks for all the help.

I've never actually found the root cause of the issue but was able to relocate the USB drive to another USB slot, which seems to have worked.

The new USB with a backup worked in the original USB slot, but the old USB seems to only want to boot with a new slot.

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