Norton Bootable Recovery Tool ISO file and USB Flash

Computer: Dell desktop running Windows 10

I created a bootable DVD with the NBRT.ISO file for the 'Norton Bootable Recovery Tool (NBRT)" and ran a full virus scan without launching Windows 10 -- as expected.

https://security.symantec.com/nbrt/nbrt.aspx


Unfortunately, when I tried a USB flash drive instead of a DVD no such luck.

I downloaded the Norton recommended "Rufus" at this link to create a bootable memory stick from the aforemenioned ISO file.

https://rufus.akeo.ie/


However, when I tried the same procedure I could never get the USB Flash to boot -- even though I had created bootable USB flash drives in the past with the Windows 10 Recovery Tool.

I gave up after about four hours. My Google search suggested many people are also unable to create a bootable USB flash.  Is NBRT.ISO only usable with DVDs and not with USB flash drives?

Has anyone solved this mystery.

~ Tom Bennett

Senior Software Engineer (retired)