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March 25th, 2023 21:00
XPS 13 9310 Operating System Loader signature found in SecureBoot exclusion database
Today I created a recovery disc using the Dell Recovery tool and put it on a usb using Ubuntu's Startup Disk Creator. I tried to boot from it today and got an screen that as a Shutdown button with this message:
"Operating System Loader signature found in SecureBoot exclusion database ('dbx'). All bootable devices failed Secure Boot verification."
I thought maybe there was something wrong with the image so I used a previous recovery image from a year ago that I think worked at the time and that also failed with the same message.
I understand I could probably disable secure boot but I would rather not. Is there a correct fix I can make on my end or is this something Dell would update?
My laptop boots fine otherwise and is up to date with all firmware updates I've been notified about.
DELL-Jesse L
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March 29th, 2023 08:00
charl3sd
To receive assistance from Dell support, they need to verify the warranty status and ownership. Click the "Get help now" icon on the right to start a live chat session. Provide to them the private Service Tag and all of your troubleshooting.
charl3sd
4 Posts
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March 30th, 2023 19:00
Hi Jesse,
I'm out of warranty but I'll see what they suggest. I was hoping for community guidance and/or if anyone else had a similar problem.