I followed how to Create a bootable USB stick on Windows for creating a USB install with persistence.
but when I try to boot from USB, I get this 1 line message "Secure boot not enabled". It's white text on a black screen, and then nothing else happens and I have to restart.
Indeed, I have disabled secure mode in UEFI (so I can boot off an Ubuntu partition on my HD). I'm not interested in turning secure boot back on, as it leads to all sorts of other complications with my other boot partitions. I've tried my USB 3.0 and USB 2.0 ports. I don't see any fast boot options in UEFI. I have an Acer Aspire v3 551. Any help appreciated.