Post #2871943

2026-05-26 04:12 UTC

5️⃣ Here&#39;s the 5th post highlighting key new features of the upcoming v261 release of systemd. #systemd261 #systemd When we first put together systemd-boot, it supported only UAPI.1 Type #1 entries: small text files with separate lines for kernel, initrd, and a few other fields. Soon later we added Type #2 entries, i.e. UKIs that are self-descriptive and which you just drop in the right dir. They have nice security and robustness properties, but they also had drawbacks, because they were very…

Replies (2)

@pid_eins@mastodon.social 2026-05-26 04:15

…rigid in nature: only one allowed kernel command line. We eventually added the concept of "profiles" to UKIs, so tha a single UKI could synthesize multiple boot menu entries, which enables you to chose one of many pre-prepared kernel command lines. Which is much more powerful, but still a bit rigid: we needed ways to securely insert local parameterization into such a system (i.e. some signature keys or so, machine identity, …) so we added the concept of "side cars" to the thing, that…

Open ##3116346
@10leej@mastodon.tuxbase.com 2026-05-26 07:44

@pid_eins@mastodon.social As always I'm glad to see an existing project get better and better. And as always I wish I knew the things you were talking about because it does in fact go a bit over my head.

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