Getting and installing Arch

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Revision as of 12:47, 2 October 2017 by Lo1 (talk | contribs) (added a reminder to boot the usb live in legacy mode if user want to multi boot using mbr partition scheme, this may not be automatic on a uefi desktop/laptop and may cause some undocumented issues with the bootloader)
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This category contains articles about Arch Linux releases, and downloading and installing Arch Linux.

The installation media and their GnuPG signatures can be acquired from the Download page.

Verify signature

It is recommended to verify the image signature before use, especially when downloading from an HTTP mirror, where downloads are generally prone to be intercepted to serve malicious images.

On a system with GnuPG installed, do this by downloading the PGP signature (under Checksums) to the ISO directory, and verifying it with gpg --keyserver-options auto-key-retrieve --verify archlinux-<version>-x86_64.iso.sig.

Alternatively, run pacman-key -v archlinux-<version>-x86_64.iso.sig from an existing Arch Linux installation.

  • The signature itself could be manipulated if it is downloaded from a mirror site, instead of from as above. In this case, ensure that the public key, which is used to decode the signature, is signed by another, trustworthy key. The gpg command will output the fingerprint of the public key.
  • Another method to verify the authenticity of the signature is to ensure that the public key's fingerprint is identical to the key fingerprint of the Arch Linux developer who signed the ISO-file. See Wikipedia:Public-key_cryptography for more information on the public-key process to authenticate keys.

Installation methods

The table below offers an overview of the common ways to boot the installation media. As the installation process retrieves packages from a remote repository, these methods require an internet connection; see Offline installation of packages and Archiso#Installation without Internet access when none is available.

  • Pointing the current boot device to a drive containing the Arch installation media is typically achieved by pressing a key during the POST phase, as indicated on the splash screen. Refer to your motherboard's manual for details.
  • When the Arch menu appears, select Boot Arch Linux and press Enter to enter the installation environment.
  • If you opt for a multi boot installation using MBR partition table but your PC is UEFI-enabled, remember to boot the USB live in legacy mode to prevent issues with the bootloader.
  • See README.bootparams for a list of boot parameters, and packages.both for a list of included packages.
Method Articles Conditions
Write the image on flash media or optical disc, then boot from it.
  • Installation on one, or a few machines at most
  • Obtain a directly bootable system
Mount the image on a server machine and have clients boot it over the network.
  • Client-server model
  • Wired (1Gbit+) network connection
Mount the image in a running Linux system and install Arch from a chroot environment.
  • Replace an existing system with reduced downtime
  • Install on the local machine, or a remote one via VNC or SSH
Set up a virtual machine and install Arch as a guest system.
  • Operating system compatible with virtualization software
  • Obtain an isolated system for learning, testing or debugging
Install Arch next to a Windows installation.
  • Machine shared with Windows users
  • Allow to easily factory-reset a Windows-preinstalled device

See also