Wait a nanosecond...Let's back up... When you say the USB doesn't appear on the "boot menu", are you referring to what you see in BIOS setup (F2 at boot) or on the F12 menu? The USB stick must be plugged into the PC while the power is off. Then power on and start tapping F12 to open that menu to look for a USB boot option. Plugging the USB stick into the PC while it's on and doing a re-start inside Win 10 won't work. PC must be fully powered off first...
So I am trying to boot on a unraid USB stick but it will not show the USB stick on the boot menu. I have tried the USB stick on another pc so I know it works, and the xps 8940 will see the stick in windows. It just is not recognizing it in the bios, or boot menu. Any ideas? And I have spend a lot of time looking at other threads but none of them have worked (or I just need more help)
XPS 8940, can't boot USB stick