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“Something has gone seriously wrong,” dual-boot systems warn after Microsoft update
(arstechnica.com)
this post was submitted on 21 Aug 2024
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The TLDR is that Microsoft released a secure boot update that blocked insecure versions of GRUB. This update was only meant to go out to Windows users since releasing it to dual booted users could break GRUB. However, it was accidentally also released to dual-booted users.
The fix involves disabling dual boot, running a command to reset secure boot, then re-enabling.
Right.
Accidentally on purpose
How would they know if you're dual booting or not?
By checking for entries in the EFI partition(s).