Swarfendor I've confirmed my BIOS mode is Legacy although I'll be danged if I can see how to change it if I wanted/needed to!
Also, I've found no place to select/deselect CSM much less anything about Secure Boot. I might be out of luck as my motherboard is simply too old? 2010 last updated in 2012. I'll look to see if there are any of the ASUS BIOS utility updates and get back with you.
I'm still mind boggled that this goof ball system will allow Zorin to boot up via the USB, but not from it's own HD in my computer. Dang it! All the best, PC





