Tag: bootctl

How to check if a computer is using BIOS or UEFI; GRUB or systemd-boot bootloader; MBR or GPT partition table

How to know if UEFI or GRUB is being used? The system booting process consists of the following 4 steps: System initialization: UEFI or BIOS (POST) Starting the bootloader (GRUB2 or systemd-boot) Kernel initialization Starting systemd, the parent of all processes Related: How to update the systemd-boot loader in /boot How to change the default operating system in Arch Linux...

How to update the systemd-boot loader in /boot

Update /boot During the installation of Arch Linux on modern computers with UEFI (BIOS replacement), we create a small partition on the disk with a mount point in /boot into which we install the boot loader using bootctl. This bootloader is systemd-boot, which is part of systemd. Over time, systemd can be updated like any other Arch Linux package. This...

How to change the default operating system in Arch Linux (for UEFI and systemd-boot)

This instruction applies to all boot loaders that implement the Boot Loader Specification and/or Boot Loader Interface, such as systemd-boot. If you have a modern computer (no older than seven years at the time of writing), then it most likely uses UEFI instead of BIOS and, therefore, uses systemd-boot to boot, which is usually mentioned in the Arch Linux installation...
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