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Disable Microsoft's "Secure Boot"
This year we had our holidays later than usual for personal reasons (making anniversaries align). We nevertheless want to remind people that UEFI "9/11" (literally September 11) will be over in a week (one hour from now in New York or in Boston).
UEFI was never needed. It was made as "solutionism". It's a solution in search of an actual problem.
If you get a chance to enter the boot menu some time soon (perhaps a reboot), be sure to turn off "SecureBoot" or "Secure Boot" [1, 2]. It should never have been "on" in the first place. Don't take a chance. Many PCs won't manage to 'rotate' to another certificate. █