What are the essential steps to follow when installing Arch Linux, and what points should we be careful about? What should we focus on to avoid the most common mistakes during the installation process? Also, how reasonable is it to use automated tools instead of manual installation?
What should you pay attention to when installing Arch Linux?
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When installing Arch Linux, the most important thing is to carefully read the **official guide** and follow each step one by one. You need to be especially careful when **partitioning disks** (like balancing with btrfs on SSDs)—I once messed up `/home` during my first install. Instead of manual installation, the automated tool **archinstall** makes sense because it speeds up basic setup (time zone, network config, etc.), but understanding the system structure manually is still important. If you're not comfortable with the command line, at least manually check the *pacstrap* and *genfstab* steps.
First thing: treat your disk like it's the only thing standing between you and a bricked system. **Triple-check** whether you're targeting `/dev/sda` or `/dev/nvme0n1`—a typo at this stage wipes partitions without confirmation. The `lsblk` and `blkid` outputs should match the installer's view; if they don't, you've got a disconnect that usually ends with a reinstall (or worse, a "why is my NVMe drive now a brick?" panic).
Next, timezone and locale skew are the silent killers. Set the clock *before* the mirror setup (`timedatectl set-ntp true`), otherwise pacstrap fails with repo timeouts that look like network issues. For mirrors, use `reflector --latest 20 --sort rate --save /etc/pacman.d/mirrorlist`; this weights by CDN speed and avoids the "why is pacman installing packages from Mongolia?" scenario. And disable NetworkManager's default dependency hell during install—you don’t need it until after base is laid down.
Package selection is where most "oops" moments happen. **Never** lean on `archinstall` (or any auto-tool) blindly; its defaults assume you’re running a headless server, not a GNOME desktop. Instead, bootstrap the minimal set (`base base-devel linux linux-firmware`), then hand-pick packages using `pacman -S` after chroot. If you *must* automate, at least audit the generated `pacman.conf` to confirm parallel downloads and `ILoveCandy` are enabled—32-core builds finish in minutes instead of hours.
Finally, kernel hooks and initramfs: if you’re on an encrypted root with LUKS2, ensure `encrypt` and `resume` hooks are in `/etc/mkinitcpio.conf` *and* the module (`dm_mod`) is loaded. Boot failure here usually traces back to missing `HOOKS=(... encrypt resume ...)` sequence in the config file. Double-tick every line—this is the step where 90 % of "works on VM, crashes on metal" bugs originate.
Before diving into Arch Linux, don’t skip hardware compatibility testing. Is it UEFI or BIOS? Is Secure Boot disabled? Is your GPU (or iGPU) supported? List devices with `lspci -k` and `lsusb`, then cross-check against the [Arch Wiki’s Hardware Compatibility list](https://wiki.archlinux.org/title/Category:Hardware). Wi-Fi cards, GPUs, and touchscreens are notorious troublemakers.
The most common failure points during installation are disk partitioning and mounting. Always use UUIDs in `/etc/fstab`—no one should rely on old-school names like `sda1`. If you’re using LVM—which I recommend—visually verify all layers with `lsblk -f` and `fdisk -l`. While *archinstall* might seem like the easiest way to avoid manual setup, I still prefer manually configuring `systemd-boot` + `btrfs` + `snapper` post-install. Automated tools, especially for newcomers, aren’t educational—and can lead to obsessive-compulsive tendencies.
If you run into boot issues after installation, write Archiso to a USB, reboot, and recover the system with `arch-chroot`. Choose between netctl and NetworkManager carefully: if you’re using a desktop environment, NetworkManager (`systemctl enable NetworkManager`) is mandatory; for servers, netctl is preferred (though `systemd-networkd` is often cleaner).
Finally, don’t forget post-install cleanup with *pacman*: remove orphaned dependencies with `pacman -Rns $(pacman -Qdtq)` and clear the cache with `pacman -Scc`.
Before installing, it's crucial to **verify the ISO** — did you compare the checksum using `sha1sum`? I always ran into kernel panics until I started checking this, and the issue was always related to it. After that, I switched to `archinstall`, and I really like how flexible it is, especially when it comes to disk partitioning and file system selection (`btrfs`/`ext4`). If you prefer manual configuration, you don’t need to use GRUB over `systemd-boot` — a simple bootloader without fallbacks is often enough.
The mistake I make most often is **losing network connection** — when setting up WiFi with `iwctl`, avoid using static IP; go with DHCP instead. If you have to DIY, it makes sense to identify disks with `lsblk` and `cfdisk`, then format manually using commands like `mkfs.ntfs`/`mkfs.ext4`. But for automated setups, `archinstall` is sufficient: just set up the disk, user, and timezone, and it handles the rest. Plus, it’s good practice to write a script for setting up AUR helpers like `yay` after installation.
The most common pitfalls when installing Arch Linux, especially with disk partitioning and bootloader settings. I always manually create the `/etc/fstab` file carefully because automated tools sometimes misidentify UUIDs or file systems. Also, when using the `pacstrap` command, make sure to include every package (base system, bootloader, network tools) in the list—missing a package later can be frustrating.
Using automated tools (like Archfi or archinstall) instead of manual installation can make sense, but I always recommend doing it manually at least once. That way, you truly learn how the system works. Switching between the two (e.g., trying archinstall first, then fixing it manually) saves time and reduces the risk of errors.
Arch Linux installation is a meticulous process that embraces minimalism and user control. At its core, the philosophy revolves around building your system "from scratch," making it essential to understand each step and the logic behind the commands. For instance, knowing the implications of UUIDs or filesystem choices (btrfs vs. ext4 vs. xfs) during partitioning can minimize future issues related to performance or recovery. Familiarity with local tools like Pacman and AUR management directly impacts your system's stability. While manual installation fosters a deep understanding of your system, automated tools (e.g., archinstall) can save time, especially for first-time users.
Common mistakes often include mismatched local time settings with the hardware clock (UTC vs. localtime) during installation, leading to time synchronization issues. Another frequent error is interrupted network connections causing "failed to download key packages" errors, which can compromise Pacman’s reliability and the proper functioning of desktop environments like KDE or GNOME. Incorrectly configuring `/etc/fstab` or misplacing the GRUB bootloader (`grub-install`) can render the system unbootable. In such cases, proficiency with live environment tools (e.g., `chroot`) becomes invaluable for manual intervention.
When it comes to automated tools, command-line-based installers like archinstall may be a sensible choice for those new to Arch, as they simplify the process by letting users make selections and have the system configured automatically. However, manual installation offers the advantage of understanding how each component functions and developing problem-solving skills for future issues. For example, adding a LUKS encryption layer requires knowledge of its operation and recovery procedures. Ultimately, while automated tools provide speed, the manual approach grants greater control and long-term knowledge.
Last year, I got stuck the most on the "disk partitioning" part while installing Arch Linux. I had preferred automatic partitioning for `/` and `/home`, but later faced performance issues because I forgot to add `swap`. When I tried manual partitioning using `cfdisk` and chose `ext4` as the file system, I made a mistake by using `ext4` for `/boot` instead of `FAT32`—because if your system supports `UEFI`, the `/boot` partition must be `FAT32`. I only noticed these small details from the guide at the last moment, so I had to start over.
I also forgot to include the `base` package during the `pacstrap` stage, which caused the system to fail to boot after installation. In the end, it's essential to follow the official guide step by step, but it's also helpful to refer to the Arch Wiki's forums and additional sections. I eventually tried `archinstall` as an automated tool—it was convenient, but it means you miss out on the advantage of manual installation, which is getting to know every part of your system. My advice is, if you're installing for the first time, start with `archinstall`, then try manual installation again later.
Thanks for sharing! When setting it up, do you personally prefer to manually control disk partitioning and bootloader settings? That's usually where I get the most confused.
Did you first read the official installation guide from start to finish and download the necessary files (ISO, cloning tools) before installing Arch? After manual partitioning, did you make sure not to forget which packages to add in the `pacstrap` command?