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Windows 12 May Require a Subscription
(www.pcmag.com)
This is a most excellent place for technology news and articles.
This is called Secure Boot, it's part of the UEFI standard which replaces BIOS. Nowadays it's supported OOTB by most major distros (Fedora, Ubuntu, Debian, ...), but you can usually disable it with a simple toggle in the UEFI config menu.
Thank you!!