June 2025
Beginner to intermediate
1180 pages
37h 48m
English
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19.5 systemd-boot
In short, GRUB works as follows on modern PCs: EFI loads the GRUB files from the EFI system partition (ESP) and starts them. Then GRUB searches the Linux file system for the kernel and the initrd file and starts the kernel. And finally, the kernel takes care of the actual system startup.
The systemd-boot project, which is part of systemd (see Chapter 20), saves one step in this process: the kernel and initrd file are placed right in the ESP and started by a tiny bootloader.
The systemd-boot project evolved from the EFI boot project called gummiboot (German for “rubber dinghy”).
This section only provides a brief overview of how systemd-boot works and the available configuration options. You can find more technical information ...
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