boot from disc

With Windows 1803 and a Dell XPS 8300 I tried to boot from a flash drive I created with USB universal Installer and the ISO - Mint.
I could not get it to boot either by just tapping F 12 and selecting it as I usually do or changing the boot order in the BIOS.
I tried another Port.
I then tried Rufus(without persistence) and also Lilli.
Do you have an idea what I am doing wrong while trying to boot to Mint?
P.S. I removed the app that I allowed through the control folder system if that is what I should have done. I never used that before.

Try the stick on another computer, if possible. Also, please confirm that you are pressing F12 and selecting "USB".

Ben

CountMike said:

Maybe "Secure BOOT" is enabled in BIOS ?

>>I have since formatted that stick as I have the old BIOS and did see the drive when I clicked F 12. It just would not boot. I wonder if that new controlled folder access has anything to do with it.
This my only PC.

the stick was actually identified as SanDisk

CountMike said:

I don't think that makes any difference, I have several and they do work fine.

>>I'll try again with a new stick

maranna said:

>>I'll try again with a new stick

>>This time the new stick was recognized and all worked out fine. I can boot off of it and use the other OS (Zorin).

Do you have an opinion about dual boot as the 32 GB stick is somewhat limited.