170 lines
4.1 KiB
Markdown
170 lines
4.1 KiB
Markdown
---
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title: Changing init
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layout: default
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nav_order: 10
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---
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# Changing init on an installed system
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Euri Linux ships with **Dinit** as the default and only install-time init.
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If you prefer a different init (OpenRC, Runit, or S6), you can switch after
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installation.
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> **Warning:** Switching init is for advanced users. In general, a fresh
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> installation is safer. Keep a bootable Artix LiveUSB handy in case
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> something goes wrong.
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>
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> OpenRC has known conflicts with Dinit on Euri Linux. If switching to
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> OpenRC fails, the recommended course of action is to reinstall the ISO
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> and use Dinit. A fresh install with Dinit is simpler and more reliable
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> than troubleshooting a broken init migration. Tutorials on using Dinit
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> are available on the Artix Linux wiki and in the Dinit documentation.
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## Overview
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1. Stop your display manager and get to a TTY
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2. Save a list of installed `-dinit` service packages
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3. Download the corresponding `-<newinit>` packages
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4. Remove the dinit packages
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5. Install the new init packages
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6. Enable services for the new init
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7. Cold reboot
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## Step-by-step
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### 1. Stop the display manager
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```bash
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dinitctl stop sddm # or lightdm / lxdm / greetd / ly
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```
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Switch to a text TTY with Ctrl+Alt+F2 and log in as root.
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### 2. Save your service list
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```bash
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pacman -Qsq dinit > services.list
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```
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This captures every installed package with `-dinit` in its name.
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The list will include things like `sddm-dinit`, `networkmanager-dinit`,
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`elogind-dinit`, etc.
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### 3. Download packages for the new init
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Replace `openrc` with `runit`, `s6`, or your init of choice:
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```bash
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pacman -Sw $(sed 's/dinit/openrc/g' < services.list)
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```
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This fetches the packages into pacman's cache without installing them.
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If this fails for any package, you'll need to install it manually later.
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### 4. Remove the old init packages
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```bash
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pacman -Rdd $(cat services.list)
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```
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The `-dd` flag bypasses dependency checks — required because we're
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ripping out the entire init layer at once.
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### 5. Install the new init
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First install the base init package and elogind:
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| Target | Base packages |
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|----------|---------------|
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| OpenRC | `openrc`, `elogind-openrc` |
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| Runit | `runit`, `elogind-runit` |
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| S6 | `s6-base`, `elogind-s6` |
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```bash
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pacman -S openrc elogind-openrc
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```
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Then install the service packages:
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```bash
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pacman -S $(sed 's/dinit/openrc/g' < services.list)
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```
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### 6. Enable services
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#### Switching to OpenRC
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```bash
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rc-update add sddm default
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rc-update add NetworkManager default
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# ... repeat for each service
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```
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Common services: `acpid`, `bluetoothd`, `cronie`, `cupsd`, `dbus`,
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`dhcpcd`, `NetworkManager`, `power-profiles-daemon`, `syslog-ng`.
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#### Switching to Runit
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```bash
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ln -s /etc/runit/sv/NetworkManager /etc/runit/runsvdir/default/
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ln -s /etc/runit/sv/sddm /etc/runit/runsvdir/default/
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# ... repeat for each service
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```
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#### Switching to S6
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```bash
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s6-service add default NetworkManager
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s6-service add default sddm
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# ... repeat for each service
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```
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### 7. Cold reboot
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A normal reboot won't work because the symlinks for `/sbin/init` and
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`/sbin/reboot` still point to the old init. Instead, synchronize
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disks and trigger a cold reboot:
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```bash
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sync
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mount / -o remount,ro
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echo b > /proc/sysrq-trigger
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```
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Or use the reset button on your machine.
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## Troubleshooting
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### System won't boot
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Boot from an Artix LiveUSB, chroot in, and check:
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```bash
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mount /dev/sdXn /mnt
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artix-chroot /mnt
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```
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From the chroot, you can reinstall packages, fix service symlinks,
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or regenerate the initramfs with `mkinitcpio -p linux`.
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### Missing service packages
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Some daemons may not have init scripts for your chosen init.
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Check the Artix repos:
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```bash
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pacman -Ss <daemon-name>-openrc # or -runit, -s6
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```
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If a package doesn't exist, you can write a custom service file
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or use a different daemon.
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### OpenRC: services don't enable on installed systems
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This was a known bug in earlier Euri Linux builds (the installer
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used `artix-service` which didn't set up OpenRC correctly).
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If you're switching to OpenRC manually on an already-installed system,
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`rc-update add` works fine — the bug was specific to the installer flow.
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