![]() ![]() Here is some extra information quoted from another forum: If you got the update and then try to boot an OS that is still using the older files, it won't work and you get a Security Violation error. ![]() In plain terms, they made it so that newer boot files they release are bootable, and older ones aren't. What happened here is that Canonical updated their UEFI Secure Boot signing key and your system's Secure Boot Advanced Targeting variable. Upon researching most of the evening, I found the following information (quoted from another site): It seems that the installation changed something in my BIOS, which makes the PC only accept security keys on newer operating system installs. I believe the issue started after I installed the latest version of Kubuntu (22.04.2), which was released only last month. ![]() Also Windows 10 install disk works fine too. ![]() When I attempt the installation, it comes up with a blue screen with the text: Verification failed: (0x1A) Security Violation The strange thing is, I have used the same ISO images (verified SHA256) on this PC previously and it worked fine with no issues. I am having a problem installing some Linux Distros (Linux Mint 21.1 & CloneZilla 2.8.0-27) on my Dell OptiPlex 7060 SFF PC (i7-8700) from either DVD or USB ISOs. ![]()
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