I failed to boot Qubes from USB drive on a Thinkpad X220 whereas it should work fine.
I used Rufus (DD Image) to install the ISO on the USB drive, desactivated the UEFI boot.
Any advice ?
I just installed Qubes on an Thinkpad x230, but I installed from a DVD. I didn't have any luck booting from USB.
Hope this helps!
I recently did an install onto x230. I used a utility (not sure which one) to extract the el torito boot image from the cd.
This wasn't the one I used, but it looks like it might do the trick?
https://www.codeproject.com/articles/11210/extracting-the-boot-image-from-a-cd-dvd-el-torito