Do I need to turn off "Secure Boot" in my BIOS to be able to boot up into a USB Linux Mint distro?

TheBigFatClown

Posts: 1,134   +528
Hi all. I am running Windows 11 23H2 on my Samsung SSD and I want to be able to boot up into Linux Mint off an old USB 2.0 flash drive. I have selected this in the BIOS but it fails to boot up off the flash drive into Linux Mint (actually a GRUB boot menu I made with YUMI). I'm pretty sure the flash drive is still bootable but I'm just guessing it doesn't work because I have "Secure Boot" enabled in my BIOS. If I disable the "Secure Boot" in my BIOS will that get the old USB 2.0 flash drive to show me the multiboot menu for my Linux distros?
And maybe, more importantly, are my "Secure Boot" keys in danger of being lost if I do this? I had the option in my BIOS to export all my "Secure Boot" keys to a device so I did this and see that I have 4 keys saved to flash now. So, I feel much better about that....even though I have no idea what I'm doing to be honest....but backups are inherently good...so...😀

***EDIT***: I just disabled "Secure Boot" in my BIOS and rebooted my Windows 11 23H2 system and it booted up without issues and there was not even a warning about booting up into Windows 11 without "Secure Boot" enabled in the BIOS. How is this possible?
 
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