Tuesday’s update left #DualBoot devices—meaning those configured to run both #Windows and #Linux—no longer able to boot into the latter when #SecureBoot was enforced.
When users tried to load Linux, they received the message: “Verifying shim SBAT data failed: Security Policy Violation. Something has gone seriously wrong".
“Something has gone seriously wrong,” dual-boot systems warn after #Microsoft update
https://arstechnica.com/security/2024/08/a-patch-microsoft-spent-2-years-preparing-is-making-a-mess-for-some-linux-users/
“Something has gone seriously wrong,” dual-boot systems warn after Microsoft update
Microsoft said its update wouldn't install on Linux…
Ars Technica