How to Install Arch Linux (2025 Updated Beginner Guide)
Most Arch installs go wrong before the installer ever loads: a corrupted download, a USB written carelessly, files nobody backed up. I have put Arch on everything from a work ThinkPad to a junk-shop desktop from Sialkot's circular road, and the smooth installs were the ones I prepared for. This guide covers the part tutorials skip — everything worth doing before a single byte of your disk changes.
Get the right ISO, then prove it
Arch publishes a fresh ISO on the first of every month; ours is archlinux-2025.10.01-x86_64.iso from archlinux.org/download. Once it lands, verify it honestly. A quietly corrupted download wastes an entire evening:
sha256sum archlinux-2025.10.01-x86_64.iso
Compare the output against the checksum printed beside the download link, character for character. A match means your file is whole. No match means download again — never talk yourself into "close enough".
Build the USB with Ventoy
Stop re-flashing a stick every time you try a different distro. Ventoy installs once; after that you drag ISO files onto the USB like ordinary documents and boot whichever you need. My single Ventoy stick carries Arch, Debian, and a rescue ISO, and has saved more machines than I can count. Rufus from rufus.ie works fine on Windows, but Ventoy is the jugaad that keeps giving. The classic one-liner still works on Linux or macOS:
sudo dd if=archlinux-2025.10.01-x86_64.iso of=/dev/sdX bs=4M status=progress oflag=sync
Check that sdX twice. The wrong target gets wiped.
Test-drive the live session
Reboot, hammer your boot-menu key — F12 on Dell, Lenovo and Acer, Esc or F9 on HP, F8 on Asus — and choose Arch Linux install medium (x86_64, UEFI). You land at a prompt as root@archiso. Nothing is installed yet, nothing will be, and that is the point: the live session is a read-only test drive, so use it. Set the clock and meet your disks:
timedatectl set-ntp true
lsblk -f
For Wi-Fi, start iwctl and connect from inside its prompt:
iwctl
station wlan0 scan
station wlan0 get-networks
station wlan0 connect "Your_WiFi_Name"
Then ping archlinux.org. Replies mean this machine's networking is solvable, which is half the battle. Before you leave the live session, screenshot that lsblk output, confirm whether the laptop boots UEFI or Legacy BIOS, and note the Wi-Fi and graphics chip names on your phone. You are collecting exactly the details the installer will ask you for.
Before anything gets erased
- Back up documents, photos, SSH keys, and browser bookmarks to an external drive or the cloud — not to a folder you will "deal with later".
- Dual-booting with Windows? Shrink the Windows partition from inside Windows first, and switch off Fast Startup. Letting Linux resize a live NTFS partition ends badly.
- Note your hardware, then read its Arch wiki pages for driver quirks before you commit the evening.
That is the whole preparation. Partitioning, pacstrap, and the bootloader are another afternoon's work, and far easier once this part is done properly.
A checksum proves a file survived its journey intact. Families in Gaza hold on to house keys and land deeds for the same reason — proof of what is theirs, kept against return. The record stays exact because it has to.
We prepare visa files the same way at HTG Travels: passport validity, blank pages, bank statement, hotel list — checked twice before a rupee leaves your hand or a form reaches an embassy. Prep is not the glamorous part of a trip; it is the part that decides whether the trip happens. Bring us the half-finished plan and we will turn it into a file worth submitting.
