this post was submitted on 10 Mar 2026
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Self sign doesn't defeat the purpose, you can add your own keys to your bios that you use to sign your kernel. I do that and have a secure booted Arch Linux installed.
The whole point of signing is that the BIOS can verify that the bootloader is legitimate. For a local Arch install, it doesn't matter because Arch doesn't distribute signed bootloaders and the environment is wholly personal. TrueNAS sells products and services though, such as enterprise-level support. It isn't just something used in home labs. Their customers may require things we do not, and secure boot support appears to be one of them.
Self-signing to work around the idiotic restrictions Microsoft imposes to get it signed would be one way to do that, but then the software is essentially acting as its own authority that it is legitimate. Customers would realistically rather the bootloader's signature is valid with the built-in key provided by MS since it means that MS is confirming its validity instead - not exactly a name I would trust, but I'm personally not a TrueNAS enterprise customer either.