Dracut is Ubuntu 25.10's new boot system. It's faster, modular but totally invisible. Here's what you need to know - and whether you need to care.

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Ubuntu 25.10 replaces initramfs-tools with Dracut for generating the initramfs boot image. Dracut is a modular, hardware-detection-based system that supports modern technologies like TPM2 and FIDO2, offering slightly faster boot times and better maintainability. The change only affects fresh installs, not upgrades, and remains invisible to most users. While technically significant for the distribution's infrastructure, it requires no action from typical users unless they've customized initramfs hooks.

Dracut in Ubuntu 25.10: What it is and Why it Matters (or Doesn’t)