What is Signed and Unsigned kernel?

General Linux Question
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Hi, everyone

I have been using Ubuntu mainline kernel installer for many days to install new kernel versions in my Linux system, so I found that the word unsigned is mentioned in all the kernels which I installed manually.

My question is, is it safe to use unsigned kernel, does it have any disadvantages? any difference between unsigned and signed kernel ?

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If you’re using secure boot, the hardware won’t boot an unsigned kernel. It’s a security thing. Hardware checks software at startup to see if it’s signed … if not, no boot. There are no performance benefits to your system either way though.

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thank you so much to reply on my topic, you comment is very helpful for me.

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